CN114948025A - Tendon suture system - Google Patents

Abstract

The invention discloses a tendon suture system, which comprises a connecting shaft; a first forceps body arranged on a first end of the connecting shaft; A first opening and a second opening that communicate with the outside at both ends; a first firing unit provided on the connecting shaft for pushing the suture needle in the first channel out of the second opening; a second forceps body on the connecting shaft; and a backing plate connected to the surface of the second forceps body facing the second opening through a detachable connecting structure, the backing plate is provided with a needle body for making the needle body of the suture needle not parallel to the The first guide hole deformed in its own axis direction; the second firing unit is arranged to be able to drive the second jaw part to move toward the first jaw part until the needle body protruding from the second opening can be inserted into the first guide of the backing plate in the hole. In this way, the tendon can be sutured stably with the suture needle and backing plate.

Description

Tendon Suture System

technical field

The invention relates to a suture system, in particular to a tendon suture system.

Background technique

When the tendon is sutured, the suture needle generally needs to be inserted into the tendon in a direction perpendicular to the muscle lines of the tendon, and the suture needle passing through the tendon needs to be deformed so that the tendon can be sutured relatively stably.

However, the existing suture mechanism cannot effectively control the degree of deformation of the suture needle, resulting in unstable effect of sutured tendon by the suture mechanism.

SUMMARY OF THE INVENTION

In order to solve the problem that the effect of suturing the tendon by the suturing mechanism is unstable at present. According to one aspect of the present invention, a tendon suture system is provided.

The tendon suturing system includes a connecting shaft; a first forceps body disposed on the first end of the connecting shaft, the first forceps body is provided with a first channel for accommodating a suture needle and communicating both ends of the first channel with the outside the first opening and the second opening; the first firing unit provided on the connecting shaft for pushing the suture needle in the first channel from the second opening; the first firing unit provided on the connecting shaft through the second firing unit Two forceps bodies; and a backing plate connected to the surface of the second forceps body facing the second opening through a detachable connecting structure, and the backing plate is provided with a backing plate for the needle body of the suture needle to occur in a direction not parallel to its own axis The deformed first guide hole; the second firing unit is arranged to be able to drive the second jaw part to move toward the first jaw part until the needle body protruding from the second opening can be inserted into the first guide hole of the backing plate.

Therefore, when using the tendon suture system to suture the tendon, the stability of the deformation of the suture needle can be ensured through the first guide hole on the backing plate, thereby ensuring the stability of the suture quality; The tendon is stapled between the two, which can increase the force-bearing area through the backing plate, produce the effect of surface fixation of the tendon, and prevent the problem of fixation failure due to tendon splitting of the wire-cut tendon. The tendon is sutured by the tendon suture system, which can be used even in places where manual suture is inconvenient, such as tendon suture in a narrow space under shoulder arthroscopy, and the suture process is semi-automatic, labor-saving and convenient.

In some embodiments, the first guide hole is adapted to the diameter of the needle body; the surface of the backing plate facing the second opening is provided with a third opening that communicates the first guide hole with the outside; the axial direction of the first guide hole is It is set so that when the needle tip of the needle body is flush with the third opening, it is not parallel to the axial direction of the needle body. Therefore, when the needle body is inserted into the first guide hole, since the axial direction of the needle body is different from that of the first guide hole, the backing plate can deform the needle body along the extending direction of the first guide hole, thereby ensuring suture The deformation of the needle is stable.

In some embodiments, the first channel includes a first straight channel and a first arc-shaped channel that communicate in sequence; wherein the first straight channel communicates with the outside through a first opening, and the first arc-shaped channel communicates with the outside through a second opening . Thereby, the needle exit direction of the suture needle can be changed through the first arc-shaped channel, so as to realize the muscle pattern of the needle body of the suture needle perpendicular to the tendon.

In some embodiments, the first firing unit includes a push rod for pushing the suture needle in the first channel. Therefore, when the backing plate drives the needle body of the suture needle to deform through the first guide hole, the suture needle can be supported by the push rod to ensure that the suture needle can be deformed stably.

In some embodiments, the first firing unit further includes a firing rod and a first moving unit; wherein, the firing rod is pivotally connected to the first handle of the connecting shaft through a first pivot shaft, and the first pivot shaft is perpendicular to the first Straight channel; the push rod is connected to the firing rod through the first moving unit, and the firing rod and the first moving unit are arranged so that when the firing rod rotates around the first pivot axis toward the first handle, the first moving unit can drive the push rod to connect relatively The shaft moves in a direction perpendicular to the first pivot shaft, so that when the firing rod is rotated relative to the first handle around the first pivot shaft, the push rod can reciprocate in a direction parallel to the first straight channel, so that the first channel can be pushed back and forth. suture needle.

In some embodiments, the first firing unit further includes a first elastic body whose two ends are respectively connected to the first handle and the firing rod; the first elastic body is configured to generate elasticity when the firing rod is rotated about the first pivot axis toward the first handle deformation. Therefore, when no external force is exerted on the firing rod, the first elastic body can keep the firing rod and the first handle relatively static, so as to prevent the push rod from pushing the suture needle in the first channel due to the movement of the firing rod toward the first handle, Thereby, the timing of protruding the suture needle from the second opening can be controlled.

In some embodiments, the second firing unit includes a fixing plate provided on the first end of the connecting shaft; a second elastic body whose two ends are respectively connected to the fixing plate and the second clamp body; a pliers body and a supporting unit on the second pliers body; the second pliers body is pivotally arranged on the connecting shaft or the fixing plate around the second pivot axis; the supporting unit and the second elastic body are arranged so that when the supporting unit abuts against When the first clamp body and the second clamp body are on, the second elastic body is elastically deformed, and when the supporting unit is not abutted on the first clamp body and the second clamp body, the release of the elastic deformation of the second elastic body can The second forceps body drives the backing plate to move toward the first forceps body, until the needle body extending from the second opening can be inserted into the first guide hole of the backing plate.

Therefore, by changing the state of the support unit from abutting on the first caliper body and the second caliper body to no longer abutting on both of them at the same time, through the release of the elastic force of the second elastic body, the backing plate can be driven to press To the suture needle protruding from the second opening, the suture needle is driven to deform along the first guide hole, and finally the tendon is sutured through the suture needle and the backing plate; Above, when the suture needle is stapled on the backing plate, the backing plate can be removed from the second forceps body to complete the suture, and then the tendon suture unit can be removed.

In some embodiments, the second firing unit further includes a traction rope connected to the support unit; the connecting shaft is provided with a second channel for the traction rope to pass through; The second channel is communicated with the outside, and is a fourth opening for the traction rope to pass through. Therefore, when the second firing unit needs to be driven, the support unit can be changed from abutting on the first forceps body and the second forceps body to no longer abut against the two forceps at the same time by pulling the traction rope extending from the fourth opening. On the one hand, the operation is convenient.

In some embodiments, the first forceps body includes a first forceps body and a raised portion extending toward the second forceps body at an end of the first forceps body away from the connecting shaft; the second opening is provided on the raised portion; The support unit abuts on the first clamp body; the support unit is a support rod, and the diameter of the support rod is smaller than the height of the protrusion. Therefore, when the traction rope pulls the support rod to make it change from abutting on the first clamp body and the second clamp body to no longer abut on both of them at the same time, the support rod will not prevent the backing plate from abutting on the protrusion. to ensure that the backing plate can smoothly drive the suture needle to deform to achieve suture.

In some embodiments, the detachable connecting structure is a double-sided tape. Therefore, after the suture needle is inserted into the first guide hole of the backing plate and deformed, when the tendon suture system is removed, the backing plate is bonded to The adhesive force on the second forceps body makes the backing plate disengage from the second forceps body.

Description of drawings

1 is a schematic structural diagram of a tendon suture system according to an embodiment of the present invention;

Fig. 2 is the structural representation of the backing plate of the tendon suture system shown in Fig. 1;

Fig. 3 is the cross-sectional structure schematic diagram of the backing plate shown in Fig. 2;

FIG. 4 is a schematic structural diagram of the tendon suture system shown in FIG. 1 from another perspective;

FIG. 5 is a schematic structural diagram of the tendon suture system shown in FIG. 1 from another perspective;

FIG. 6 is a schematic cross-sectional structure diagram of the tendon suture system shown in FIG. 5 along the D-D direction;

FIG. 7 is a schematic structural diagram of the tendon suture system shown in FIG. 1 from another perspective;

FIG. 8 is a schematic cross-sectional structure diagram of the tendon suture system shown in FIG. 7 along the E-E direction;

FIG. 9 is a schematic structural diagram of the tendon suturing system shown in FIG. 1 in a state where the suture needle is pushed out;

Figure 10 is a schematic cross-sectional structure diagram of the tendon suture system shown in Figure 9;

11 is a schematic structural diagram of the second forceps body of the tendon suturing system shown in FIG. 1 being compressed on the first forceps body;

12 is a schematic structural diagram of a suture needle according to an embodiment of the present invention;

13 is a schematic structural diagram of the suture needle of the present invention being stapled to the tendon through a backing plate;

Reference numerals: 100, suture needle; 101, needle body; 102, needle tip; 103, connecting handle; 104, suture thread; 105, barb; 200, tendon; 20, connecting shaft; 21, first handle; 22, first 221, the fourth opening; 23, the second handle; 24, the second straight channel; 30, the first forceps body; 31, the first forceps body; 32, the convex part; 301, the first channel; 3011, 3012, the first arc-shaped channel; 302, the first opening; 303, the second opening; 40, the first firing unit; 41, the push rod; 42, the firing rod; 43, the first moving unit; 431 432, the first slider; 44, the first pivot shaft; 45, the first elastic body; 50, the second clamp body; 51, the second pivot shaft; 60, the second firing unit; 61, fixed plate; 62, second elastic body; 63, support unit; 64, traction rope; 70, detachable connection structure; 80, backing plate; 81, first guide hole; 811, third opening; 82, first positioning hole .

Detailed ways

It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict.

It should also be noted that in this document, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply those entities or operations There is no such actual relationship or order between them. Furthermore, the terms "comprising" and "comprising" include not only those elements, but also other elements not expressly listed, or elements inherent to such a process, method, article or apparatus. Without further limitation, an element defined by the phrase "comprises" does not preclude the presence of additional identical elements in a process, method, article, or device that includes the element. The terms used in this document are generally those commonly used by those skilled in the art. If there is any inconsistency with the commonly used terms, the terms in this document shall prevail.

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Figures 1-12 schematically illustrate a tendon suturing system according to one embodiment of the present invention.

As shown in FIG. 6 , the tendon suture system includes a connecting shaft 20, a first forceps body 30, a second forceps body 50, a first firing unit 40, a second firing unit 60, a detachable connecting structure 70 and a backing plate 80; wherein , the first forceps body 30 is provided on the first end of the connecting shaft 20, and the first forceps body 30 is integrally formed or processed with a first channel 301 for accommodating the suture needle 100, and the first forceps body 30 is also integrally formed Or processed with a first opening 302 and a second opening 303 that communicate the two ends of the first channel 301 with the outside; the first firing unit 40 is provided on the connecting shaft 20 and is used for the Pushed out from the second opening 303 ; the second forceps body 50 is arranged on the connecting shaft 20 through the second firing unit 60 ; the backing plate 80 is connected to the surface of the second forceps body 50 facing the second opening 303 through the detachable connecting structure 70 The first guide hole 81 is integrally formed or processed on the backing plate 80. The first guide hole 81 is used to deform the needle body 101 of the suture needle 100 in a direction not parallel to the axis of the needle body 101 itself; the second firing The unit 60 is configured to be capable of driving the second jaw portion to move toward the first jaw portion until the needle body 101 extending from the second opening 303 can be inserted into the first guide hole 81 of the backing plate 80 .

One embodiment of the first firing unit 40 is shown in FIG. 6 , which includes a push rod 41 for pushing the suture needle 100 in the first channel 301 . Therefore, when the backing plate 80 drives the needle body 101 of the suture needle 100 to deform through the first guide hole 81 , the suture needle 100 can be supported by the push rod 41 (as shown in FIG. 9 and FIG. 10 ) to ensure the suture needle 100 Deformation can occur stably.

Further, as shown in FIG. 1 , FIG. 4 , FIG. 6 , and FIGS. 8 to 11 , the first firing unit 40 further includes a firing rod 42 and a first moving unit 43 ; wherein the firing rod 42 can be rotated through the first pivot shaft 44 It is pivotally connected to the connection shaft 20, specifically, connected to the first handle 21 of the connection shaft 20, and the first pivot shaft 44 is arranged perpendicular to the first straight channel 3011; the push rod 41 is connected to the On the firing rod 42, the firing rod 42 and the first moving unit 43 are arranged so that when the firing rod 42 rotates around the first pivot shaft 44 toward the first handle 21, the first moving unit 43 can drive the push rod 41 to be perpendicular to the connecting shaft 20. It moves in the direction of the first pivot shaft 44 so that when the firing rod 42 rotates around the first pivot shaft 44 relative to the first handle 21 , the first moving unit 43 can drive the push rod 41 along the direction parallel to the first straight channel 3011 The reciprocating movement can push the suture needle 100 in the first channel 301 (as shown in FIG. 1 before the firing rod 42 moves toward the first handle 21 ).

One of the implementations of the first moving unit 43 is shown in FIGS. 1 , 4 , 6 and 8 to 11 , which includes a first guide rail 431 integrally formed, machined or connected to the firing rod 42 and adapted to The first sliding block 432 in the first guide rail 431; wherein, the first sliding block 432 can rotate relative to the first sliding rail or the push rod 41 around the axis of rotation parallel to the first pivot shaft 44, and the first sliding block 432 is provided at Putter 41 on.

Further, with continued reference to FIGS. 1 , 4 , 6 and 8 to 11 , the first firing unit 40 further includes a first elastic body 45 whose ends are connected to the first handle 21 and the firing rod 42 respectively; The first elastic body 45 is arranged to elastically deform when the firing rod 42 is rotated about the first pivot shaft 44 toward the first handle 21 (as shown in FIG. 9 and FIG. The needle 100 is pushed out of the second opening 303). Therefore, when no external force is exerted on the firing rod 42, the firing rod 42 and the first handle 21 can be kept relatively static by the first elastic body 45 (as shown in FIG. 1), so as to prevent the firing rod 42 from moving toward the first handle 21 As a result, the push rod 41 pushes the suture needle 100 in the first channel 301 , so that the timing of the suture needle 100 extending from the second opening 303 can be controlled.

One embodiment of the second firing unit 60 is shown in FIGS. 1 , 4 , 6 and 8 to 10 , which includes a fixing plate 61 , a second elastic body 62 and a supporting unit 63 ; wherein the fixing plate 61 It is arranged on the first end of the connecting shaft 20; both ends of the second elastic body 62 are respectively connected to the fixing plate 61 and the second clamp body 50; the support unit 63 is detachably abutted against the first clamp body 30 and the second clamp body 50. and the second clamp body 50 is pivotally arranged on the connecting shaft 20 or the fixing plate 61 around the second pivot shaft 51; the supporting unit 63 and the second elastic body 62 are arranged so that when the supporting unit 63 abuts against When the first forceps body 30 and the second forceps body 50 are placed on the first forceps body 30 and the second forceps body 50 , the second elastic body 62 is elastically deformed (as shown in FIGS. 9 and 10 ), and when the supporting unit 63 does not abut against the first forceps body 30 and the second forceps body 50 When the forceps body 50 is on, the release of the elastic deformation of the second elastic body 62 enables the second forceps body 50 to drive the backing plate 80 to move toward the first forceps body 30 until the needle body 101 extending from the second opening 303 can be inserted into the pad in the first guide hole 81 of the plate 80 (as shown in FIG. 11 ). Therefore, by changing the state of the support unit 63 from abutting on the first clamp body 30 and the second clamp body 50 to no longer abutting on both at the same time, and by releasing the elastic force of the second elastic body 62, The driving backing plate 80 presses the suture needle 100 protruding from the second opening 303, and drives the suture needle 100 to deform along the first guide hole 81, and finally sutures the tendon 200 through the suture needle 100 and the backing plate 80; 80 is connected to the second forceps body 50 through the detachable connecting structure 70. When the suture needle 100 is stapled on the backing plate 80, the backing plate 80 can be removed from the second forceps body 50 to complete the suture (suture effect). As shown in Figure 13), the tendon suture system can be removed.

Further, as shown in FIG. 8 , the second firing unit 60 further includes a traction rope 64 connected to the support unit 63 ; the connecting shaft 20 is integrally formed or processed with a second channel 22 for the traction rope 64 to pass through; the connecting shaft A fourth opening 221 connecting the second channel 22 with the outside is integrally formed or processed at a position away from the first end of the 20 , for the traction rope 64 to pass through. Therefore, when the second firing unit 60 needs to be driven, the support unit 63 can be changed from abutting on the first forceps body 30 and the second forceps body 50 into a non-contact state by pulling the traction rope 64 extending from the fourth opening 221 . It is easy to operate by leaning against both at the same time.

Further, as shown in FIG. 1 , FIG. 4 , FIG. 6 and FIGS. 8 to 10 , the first clamp body 30 includes a first clamp body 31 and the end of the first clamp body 31 away from the connecting shaft 20 facing the first clamp body 31 . The second opening 303 is integrally formed or processed on the raised portion 32; the support unit 63 is against the first clamp body 31; the support unit 63 is a support rod, and the support rod The diameter is smaller than the height of the raised portion 32 . Therefore, when the traction rope 64 pulls the support rod, so that it is transformed from abutting on the first forceps body 30 and the second forceps body 50 to no longer abut on both at the same time (as shown in FIG. 11 ), the support The rod will not prevent the backing plate 80 from abutting on the protruding portion 32, so as to ensure that the backing plate 80 can smoothly drive the suture needle 100 to deform, so as to achieve suture.

Preferably, as shown in FIG. 8 , a second handle 23 is also provided near the position of the connecting shaft 20 where the fourth opening 221 is provided, so that the user can place his hand on the second handle 23 when the traction rope 64 is not pulled. to avoid pulling the traction rope 64 by mistake.

Exemplarily, at least one of the first elastic body 45 and the second elastic body 62 may be implemented as a compression spring, rubber, or the like.

As one implementation manner of the detachable connection structure 70 , as shown in FIG. 2 and FIG. 3 , the detachable connection structure 70 is a double-sided adhesive tape. Therefore, after the suture needle 100 is inserted into the first guide hole 81 of the backing plate 80 and deformed, when the tendon suture system is taken out, since the engaging force between the suture needle 100 and the backing plate 80 is greater than that of the double-sided tape The adhesive force of the backing plate 80 on the second forceps body 50 makes the backing plate 80 separate from the second forceps body 50 .

As another implementation manner of the detachable connection structure 70, it can also be implemented as a snap-fit structure, and the snap-fit force of the snap-fit structure is smaller than the snap-fit force between the suture needle 100 and the backing plate 80, and the snap-fit structure can adopt the existing snap-fit structure. There are structures commonly used in the art, and the present invention does not limit the specific implementation of the buckle structure (not shown in the figure).

As one embodiment of the backing plate 80 capable of deforming the first guide hole 81 when the suture needle 100 is inserted into it, as shown in FIG. And the surface of the backing plate 80 facing the second opening 303 is provided with a third opening 811 that communicates the first guide hole 81 with the outside; the axial direction of the first guide hole 81 is set so that when the needle tip of the needle body 101 When 102 is flush with the third opening 811, it is not parallel to the axial direction of the needle body 101. The hardness is greater than that of the suture needle 100 . Therefore, when the needle body 101 is inserted into the first guide hole 81, since the axial direction of the needle body 101 is different from the axial direction of the first guide hole 81, the needle body 101 can be extended along the first guide hole 81 through the backing plate 80 The direction is deformed, so as to ensure stable deformation of the suture needle 100 .

When using the tendon suturing system to suture the tendon 200, the tendon 200 to be sutured is placed between the first forceps body 30 and the second forceps body 50, and the to-be-sutured portion of the tendon 200 to be sutured is covered on the first forceps body. 30 on the second opening 303; then, the suture needle 100 in the first channel 301 of the first forceps body 30 is pushed out from the second opening 303 by the first firing unit 40 (as shown in FIG. 9 and FIG. 10 ), At this time, the suture needle 100 protruding from the second opening 303 can pass through the tendon 200 to be sutured, and can also push up the tendon 200 to be sutured; then, the second forceps portion is driven by the second firing unit 60 toward the first A jaw moves until the needle body 101 extending from the second opening 303 can be inserted into the first guide hole 81 of the backing plate 80 (as shown in FIG. 11 ). Because the stability of the deformation of the suture needle 100 can be ensured through the first guide hole 81 on the backing plate 80, thereby ensuring the stability of the suture quality; The force-bearing area can be increased by the backing plate 80 to produce the effect of surface fixation of the tendon 200 , thereby preventing the problem of fixation failure caused by the tendon 200 being split due to the wire-cut tendon 200 . The tendon 200 is sutured by the tendon suturing system, which can be used even in places where manual suture is inconvenient, such as the suture of the tendon 200 in a narrow space under shoulder arthroscopy, and the suture process is semi-automatic, labor-saving and convenient. Preferably, the backing plate 80 is made of a biodegradable or absorbable material, so that the backing plate 80 does not need to be separated from the staples after the suture is completed.

In a preferred embodiment, as shown in FIG. 6 , the first channel 301 includes a first straight channel 3011 and a first arc-shaped channel 3012 that are communicated in sequence; wherein, the first straight channel 3011 communicates with the outside through the first opening 302, and the first straight channel 3011 communicates with the outside through the first opening 302. An arc-shaped channel 3012 communicates with the outside through the second opening 303 . Thus, the needle exit direction of the suture needle 100 can be changed through the first arc-shaped channel 3012 , so as to realize the muscle pattern of the needle body 101 of the suture needle 100 being perpendicular to the tendon 200 .

In a preferred embodiment, as shown in FIG. 2 and FIG. 3 , the backing plate 80 is further provided with a positioning structure for positioning with the second forceps body 50 to ensure that when the second forceps body 50 moves toward the first forceps body 30 , the needle tip 102 of the needle body 101 extending from the second opening 303 can be aligned with the first guide hole 81 on the backing plate 80 . Specifically, the positioning structure on the backing plate 80 may be a first positioning hole 82 adapted to the positioning column on the second forceps body 50 . When the first positioning hole 82 of the backing plate 80 completely covers the detachable connecting structure 70, the first positioning hole 82 is also integrally formed or processed at the corresponding position of the detachable connecting structure 70. Therefore, after one stitching is completed, a new backing plate 80 can be installed, while ensuring the accuracy of the position of the newly installed backing plate 80 .

In a preferred embodiment, as shown in FIG. 6 and FIG. 10 , the connecting shaft 20 is integrally formed with a second straight channel 24 adapted to the push rod 41 , and the second straight channel 24 is parallel to the first straight channel 3011 , so as to provide support while providing guidance for the movement of the push rod 41 .

In a preferred embodiment, as shown in FIG. 12 , the tendon suturing system further includes a suture needle 100 , and the suture thread 104 connected to the suture needle 100 is provided with barbs 105 . Specifically, the suture needle 100 includes two needle bodies 101, the two needle bodies 101 are connected by a connecting handle 103, the free ends of the two needle bodies 101 are provided with a needle tip 102, and the suture 104 is connected to the needle body 101 or the connecting handle 103. Preferably, the free end of the barb 105 is disposed toward the end away from the suture needle 100 to achieve a one-way locking effect. Preferably, the barbs 105 can be set in a fishbone shape. Moreover, the suture 104 with the barbs 105 can also be used in conjunction with the peg locking device to improve the locking effect.

In the preferred embodiment, the backing plate 80 is made of stainless steel. Preferably, the strength of the backing plate 80 is greater than the strength of the suture needle 104 .

The foregoing are merely some of the embodiments of the present invention. For those of ordinary skill in the art, without departing from the inventive concept of the present invention, several modifications and improvements can be made, which all belong to the protection scope of the present invention.

Claims (10)

1. tendon suture system, is characterized in that, comprises: connecting shaft; The first forceps body is provided on the first end of the connecting shaft, and the first forceps body is provided with a first channel for accommodating the suture needle and a first channel for connecting both ends of the first channel with the outside. an opening and a second opening; a first firing unit provided on the connecting shaft for pushing the suture needle in the first channel out of the second opening; a second clamp body provided on the connecting shaft through the second firing unit; and a backing plate connected to the surface of the second forceps body facing the second opening through a detachable connecting structure, the backing plate is provided with a needle edge for making the needle body of the suture needle non-parallel to itself The first guide hole deformed in the axial direction; The second firing unit is configured to drive the second jaw part to move toward the first jaw part until the needle body extending from the second opening can be inserted into the first guide hole of the backing plate. 2. The tendon suture system according to claim 1, wherein the first guide hole is adapted to the diameter of the needle body; A surface of the backing plate facing the second opening is provided with a third opening that communicates the first guide hole with the outside; The axial direction of the first guide hole is set so that when the needle tip of the needle body is flush with the third opening, it is not parallel to the axial direction of the needle body. 3. The tendon suturing system according to claim 1, wherein the first channel comprises a first straight channel and a first arc-shaped channel that are communicated in sequence; wherein, The first straight channel communicates with the outside through the first opening, and the first arc-shaped channel communicates with the outside through the second opening. 4. The tendon suturing system of claim 3, wherein the first firing unit includes a push rod for pushing the suture needle in the first channel. 5. The tendon suturing system of claim 4, wherein the first firing unit further comprises a firing rod and a first moving unit; wherein, The firing rod is pivotably connected to the first handle of the connecting shaft through a first pivot shaft, the first pivot shaft being perpendicular to the first straight channel; The push rod is connected to the firing rod through a first moving unit, and the firing rod and the first moving unit are arranged such that when the firing rod is rotated about the first pivot axis toward the first handle, the first A moving unit can drive the push rod to move relative to the connecting shaft in a direction perpendicular to the first pivot shaft. 6. The tendon suture system according to claim 5, wherein the first firing unit further comprises a first elastic body whose ends are respectively connected to the first handle and the firing rod; The first elastic body is configured to elastically deform when the firing rod is rotated about the first pivot axis toward the first handle. 7. The tendon suturing system according to any one of claims 1 to 6, wherein the second firing unit comprises: a fixing plate arranged on the first end of the connecting shaft; a second elastic body whose two ends are respectively connected to the fixing plate and the second clamp body; a support unit that is detachably abutted on the first forceps body and the second forceps body; The second clamp body is pivotally arranged on the connecting shaft or the fixing plate around the second pivot shaft; The support unit and the second elastic body are arranged so that when the support unit abuts on the first clamp body and the second clamp body, the second elastic body is elastically deformed, and when the support unit does not abut When the first forceps body and the second forceps body are on, the release of the elastic deformation of the second elastic body enables the second forceps body to drive the backing plate to move toward the first forceps body until the protruding force from the second opening is reached. The needle body can be inserted into the first guide hole of the backing plate. 8. The tendon suturing system according to claim 7, wherein the second firing unit further comprises a traction cord connected to the support unit; The connecting shaft is provided with a second channel for the traction rope to pass through; A position of the connecting shaft away from the first end thereof is provided with a fourth opening which communicates the second passage with the outside and allows the traction rope to pass through. 9 . The tendon suturing system according to claim 8 , wherein the first forceps body comprises a first forceps body and an end of the first forceps body away from the connecting shaft facing the second forceps body. 10 . the protrusion formed by extension; the second opening is provided on the raised portion; the support unit abuts on the first clamp body; The support unit is a support rod, and the diameter of the support rod is smaller than the height of the raised portion. 10. The tendon suture system according to any one of claims 1 to 6, wherein the detachable connection structure is a double-sided adhesive tape.

Images