CN102551872B - A single-hole laparoscopic sheath assembly - Google Patents

Abstract

Single-hole laparoscopic sheath assembly, including flexible sheath and catheter for surgical instrument introduction, wherein the flexible sheath includes several flexible channels, balloons in the sheath, external fixation ring, corrugated elastic retractor tube, internal fixation ring, flexible sheath The lower end of the sheath includes an external fixation ring, a corrugated elastic retractor tube and an internal fixation ring connected from top to bottom; several flexible passages at the upper end of the flexible sheath are provided with airtight air valves, and catheters are inserted into several flexible passages. Through the center of the external fixation ring, the corrugated elastic retractor tube and the internal fixation ring, the corrugated elastic device connects several flexible channels with the outer ring of the flexible sheath; Place over the channel of the instrument guide tube. The invention increases the flexibility of the operation of the surgical instrument; the double air-closing valve adopts a double sealing structure to ensure the sealing of the guiding channel before and after the instrument is inserted.

Description

A single-hole laparoscopic sheath assembly

technical field

The invention relates to a novel single-hole laparoscopic sheath tube design and component assembly, belonging to the technical field of medical devices.

Background technique

With the further development of minimally invasive surgery, abdominal wall scarless surgery has become a new research hotspot, mainly in two aspects: natural orifice endoscopic surgery (NOTES) and transumbilical endoscopic surgery (TUES).

The basic idea of NOTES is to complete intra-abdominal surgery through the natural orifice of the human body, such as the mouth, vagina, anus or urethra, with the help of an endoscopic platform. At present, it is believed that several problems need to be solved before the clinical application of NOTES: firstly, the choice of natural orifice approach is confusing and difficult to close; secondly, the limitation of the operating platform and the single equipment; thirdly, the contrast of spatial positioning and the fixed pattern of operating habits. These are the difficulties that NOTES is currently difficult to overcome. Therefore, people try to improve the laparoscopic surgery method to achieve the purpose of no scar on the abdominal wall. The umbilicus is the embryonic natural orifice of the human body, and TUES is an inevitable research focus. Generally, the single-hole multi-channel sheath used in TUES is an active retraction of the surgical incision, and the doctor actively pulls the sheath to retract the surgical incision. The resulting problems are insufficient retraction of the incision and increased operational complexity, which makes it difficult to insert and replace surgical instruments and easily damages the sheath. However, there are many deficiencies in the application of existing surgical retractors, mainly due to poor sealing, which cannot expand the necessary surgical space, and affects the field of view and operation.

The present invention is a novel single-hole laparoscopic sheath tube design and component assembly. The transverse elastic force generated by the corrugated elastic retractor tube can facilitate the retraction of the surgical incision and establish instrument operation channels. The corrugated elastic device increases several flexible channels in the horizontal direction and The range of movement in the vertical direction. In this way, the laparoscopic surgical instrument can move flexibly in the guiding catheter, preventing the flexible sheath from being punctured by the movement and insertion of the instrument, and ensuring the airtightness of the instrument operation channel and the guiding catheter when the surgical instrument is pulled out or operated.

Contents of the invention

The purpose of the present invention is to provide a novel single-hole laparoscopic sheath design. In particular, the single-hole laparoscopic sheath tube assembly that provides sealing and convenient operation can be conveniently used in cavity endoscopic surgery.

The technical solution of the present invention is: a single-hole laparoscopic sheath assembly, which includes a flexible sheath and a catheter for introducing surgical instruments, wherein the flexible sheath includes several flexible channels, air bags in the sheath, external fixation rings, corrugated elastic pull The lower end of the flexible sheath includes an external fixation ring connected from top to bottom, a corrugated elastic retraction tube and an internal fixation ring; several flexible passages at the upper end of the flexible sheath are equipped with airtight gas The valve and the catheter are inserted into several flexible passages and pass through the center of the external fixation ring, the corrugated elastic retraction tube and the internal fixation ring. The corrugated elastic device connects several flexible passages with the outer ring of the flexible sheath; The double air-closing valve is placed above the channel of the instrument guide tube. The tube wall of the corrugated elastic retractor tube is also corrugated.

When in use, the internal fixation ring is put into the abdomen through a small incision in the abdominal wall, and the extracorporeal fixation ring at one end of the stretched corrugated elastic retractor tube is placed outside the abdomen, thereby generating the longitudinal elastic force of the corrugated elastic retractor tube, so that the extracorporeal fixation ring is in contact with the abdomen. The fixed ring in the body fits tightly inside and outside the abdominal wall, and at the same time, the transverse elastic force generated by the corrugated elastic retractor tube retracts the abdominal wall incision and makes the corrugated elastic retractor tube closely adhere to the abdominal wall, so that the surgical instrument operation channel is kept closed and the abdominal wall incision is retracted. The corrugated elastic device adopts annular corrugated concentric circle structure and elastic material, so that the flexible channel can be pulled out in the vertical direction and moved in all directions in the horizontal direction, increasing the flexibility of the operation of surgical instruments. The present invention also provides a component assembly based on the design of a novel single-hole laparoscopic sheath, the component assembly includes a catheter and a flexible sheath, wherein the catheter is composed of a double air-closing valve and an instrument guide tube, and the flexible sheath is composed of several flexible channels , an air bag in the sheath, an external fixation ring, a corrugated elastic retractor tube, an internal fixation ring, and a corrugated elastic device.

Since the elastic force of the elastic material of the corrugated elastic retractor tube is limited, a corrugated structure is added to strengthen the elastic force of the corrugated elastic retractor tube, so that the closed surgical incision of 1-2.5 cm is retracted into a columnar channel with a diameter of 3-5 cm. The catheter is then inserted through the flexible channel, through the columnar channel and into the abdomen. Make the laparoscopic surgical instruments move flexibly in the catheter, prevent the flexible sheath from being punctured by the movement and insertion of the instruments, and ensure the airtightness of the surgical channel when the surgical instruments are pulled out or moved during operation.

The new single-hole laparoscopic sheath tube assembly is used to retract the surgical incision on the body surface, provide the operating channel for surgical instruments, and ensure the airtightness of the operating channel while retracting the incision; when in use, put the internal fixation ring through the small abdominal wall incision In the abdomen, the extracorporeal fixation ring at one end of the stretched corrugated elastic retractor tube is placed outside the abdomen, thereby generating the longitudinal elastic force of the corrugated elastic retractor tube, so that the extracorporeal fixation ring and the internal fixation ring are closely attached to the inside and outside of the abdominal wall, while the corrugated elastic The transverse elastic force generated by the retractor tube retracts the abdominal wall incision and makes the corrugated elastic retractor tube closely fit the abdominal wall, so that the operation channel of the surgical instrument is kept closed and the abdominal wall incision is retracted at the same time. Due to the limited elastic force of the elastic material of the corrugated elastic retractor tube, a corrugated structure is added to strengthen the elastic force of the corrugated elastic retractor tube, so that the closed surgical incision of 1-2.5 cm can be retracted into a columnar channel with a diameter of 3-5 cm; The corrugated elastic retractor tube has a corrugated structure, and its material form is a polymer elastic material; the corrugated elastic device is an annular corrugated concentric circle structure, and its material form is a polymer elastic material; the double air-closing valve adopts double sealing The structure ensures the sealing of the guiding channel before and after the instrument is inserted; the instrument guiding tube provides the surgical instrument to enter the abdominal wall channel, protects the flexible sheath from damage, and supports the surgical instrument at the same time. The invention provides an easy-to-operate platform for laparoscopic minimally invasive surgery.

Preferably, the structure of the corrugated elastic retractor tube is a corrugated structure.

Preferably, the structure of the corrugated elastic device is an annular corrugated concentric circle structure.

Preferably, the material of the flexible sheath and the double air-closing valve is silica gel.

Preferably, the flexible sheath is provided with several flexible passages, the upper end of the flexible passages is provided with a sealing ring, and the lower end is provided with a gas stop valve.

Preferably, the flexible sheath is provided with an air bag inside the sheath and a corrugated elastic retractor tube.

Preferably, the catheter is provided with an air closure valve and an instrument guiding tube.

The beneficial effects of the present invention are: compared with the solutions in the prior art, the present invention is a replacement type single-hole laparoscopic sheath tube. The extracorporeal fixation ring at one end of the retractor tube is placed outside the abdomen, thereby generating the longitudinal elastic force of the corrugated elastic retractor tube, which makes the extracorporeal fixation ring and the internal fixation ring closely fit inside and outside the abdominal wall, and at the same time, the lateral elastic force generated by the corrugated elastic retractor tube The abdominal wall incision is retracted and the corrugated elastic retractor tube is closely attached to the abdominal wall, so that the operating channel of the surgical instrument is kept closed and the abdominal wall incision is retracted. Since the elastic force of the elastic material of the corrugated elastic retractor tube is limited, a corrugated structure is added to strengthen the elastic force of the corrugated elastic retractor tube, so that the closed surgical incision of 1-2.5 cm is retracted into a columnar channel with a diameter of 3-5 cm. The catheter is then inserted through the flexible channel, through the columnar channel and into the abdomen. The corrugated elastic device adopts annular corrugated concentric circle structure and elastic material, so that the flexible channel can shrink downward or stretch upward, and at the same time increase the range of horizontal movement and increase the flexibility of surgical instrument operation. In this way, the laparoscopic surgical instruments can move flexibly in the catheter, preventing the flexible sheath from being punctured by the movement and insertion of the instruments, and ensuring the airtightness of the surgical channel while the surgical instruments are being pulled out or operated, so that the operation and visual field space is good, and the airtightness is good. good.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is the structural representation of flexible sheath of the present invention;

Fig. 2 is the schematic diagram of catheter structure of the present invention;

Fig. 3 is the schematic diagram of operation assembly of the present invention;

Fig. 4 is a schematic diagram of another structure of the present invention.

Detailed ways

The specific structure of the novel single-hole laparoscopic sheath design of the present invention will be described in detail below in conjunction with the accompanying drawings.

The component assembly includes a flexible sheath (1), a catheter (2), wherein the flexible sheath (1) is composed of a flexible channel (1-1), an air bag (1-2) in the sheath, and an external fixation ring (1- 3), corrugated elastic retractor tube (1-4), internal fixation ring (1-5), corrugated elastic device (1-6), catheter (2) consists of double air-closing valve (2-1), instrument guide tube ( 2-2) Composition. The single-hole laparoscopic sheath is used to retract the surgical incision on the body surface, provide the operating channel for surgical instruments, and ensure the airtightness of the operating channel while retracting the incision; when in use, put the internal fixation ring (1-3) through the small incision on the abdominal wall In the abdomen, the extracorporeal fixation ring (1-5) at one end of the stretched corrugated elastic retractor tube (1-4) is placed outside the abdomen, thereby generating the longitudinal elastic force of the corrugated elastic retractor tube (1-4), enabling external fixation The rings (1-5) and the fixed rings (1-3) in the body are closely attached to the inside and outside of the abdominal wall (3), and at the same time, the transverse elastic force generated by the corrugated elastic retractor tube (1-4) retracts the abdominal wall incision (3) and makes the corrugation Elastic retractor tubes (1-4) are closely attached to the abdominal wall (3), keeping the operation channel of surgical instruments closed while retracting the small incision on the abdominal wall; double air-closing valves (2-1) are provided, and double-sealing structures are adopted to ensure instrument insertion Sealing of the guide channel before and after insertion; the instrument guide tube (2-2) provides surgical instruments to enter the abdominal wall channel to protect the flexible sheath (1) from damage while supporting the surgical instruments.

The corrugated elastic device (1-6) is an annular corrugated concentric circle structure, and its material is a polymer elastic material, which can make the flexible channel shrink downward or stretch upward, and at the same time increase the range of movement in the horizontal direction and increase the flexible operation of the catheter (2) Spend. The preparation material of the double air-closing valve (2-1) is polymer elastic material such as silica gel and latex.

The flexible channel (1-1) is characterized in that it is provided with a sealing ring (1-1-1) and a gas stop valve (1-1-2) to double-seal the catheter (2) to be inserted.

The number of flexible channels (1-1) can be 3, 4 or 5, etc.

The catheter (2) is composed of a double air-closing valve (2-1) and an instrument guide tube (2-2). The double air closing valve (2-1) is double-sealed by a sealing ring (2-1-1) and an air stop valve (2-1-2).

The instrument guide tube (2-2) keeps the flexible sheath (1) safe from surgical instruments.

The internal diameter of instrument guide tube (2-2) can be various specifications such as 3 millimeters, 5 millimeters, 10 millimeters, 12 millimeters.

Referring to Fig. 3, the new single-hole laparoscopic sheath tube of the present invention, when in use, puts the internal fixation ring (1-5) into the abdomen through a small incision in the abdominal wall, and stretches the corrugated elastic retractor tube (1-4) at one end. The extracorporeal fixation ring (1-3) is placed outside the abdomen, thereby generating the longitudinal elastic force of the corrugated elastic retractor tube (1-4), which makes the extracorporeal fixation ring (1-5) closely adhere to the inner fixation ring (1-3) It fits inside and outside the abdominal wall (3), and at the same time, the transverse elastic force generated by the corrugated elastic retractor tube (1-4) retracts the abdominal wall incision (3) and makes the corrugated elastic retractor tube (1-4) closely adhere to the abdominal wall (3), While keeping the operating channel of the surgical instrument sealed, the closed surgical incision of 1-2.5 cm is retracted into a columnar channel with a diameter of 3-5 cm. Then insert the catheter (2) into the flexible sheath (1) through the flexible channel (1-1) to avoid damage to the flexible sheath (1) by surgical instruments. The material can make the flexible channel (1-1) contract downward or stretch upward (as shown in Figure 3 or Figure 4), increasing the flexibility of the operation of the surgical instrument. After the assembly operation of the novel single-hole laparoscopic sheath of the present invention is completed, the air bag (1-2) can be filled with gas by the intra-abdominal gas, so that the external fixation ring (1-4) can be closely attached to the abdominal wall. Afterwards, surgical instruments can enter the abdominal cavity through the catheter (2) to perform corresponding surgical operations.

Claims (7)

1. single-hole laparoscopic sheath pipe assembly, it is characterized in that this assembly comprises the conduit that flexible shroud and operating theater instruments are introduced, wherein flexible shroud comprises that the air bag in some flexible channels, sheath, external retainer ring, ripple elasticity retract retainer ring in pipe, body, and the lower end of flexible shroud comprises that top-down described external retainer ring, the ripple elasticity being connected in one retracts retainer ring in pipe and body; Described some flexible channels of the upper end of flexible shroud are equipped with airtight air valve, described conduit inserts in described some flexible channels and retracts the central authorities of retainer ring in pipe and body through described external retainer ring, ripple elasticity, is provided with ripple Billiard apparatus described some flexible channels are connected with flexible shroud outer ring; Described conduit is made up of dual gas check valve and instrument guide, and described dual gas check valve is placed in the passage top of instrument guide.

2. single-hole laparoscopic sheath pipe assembly according to claim 1, is characterized in that it is corrugated that described ripple elasticity retracts pipe (1-4) tube wall.

3. single-hole laparoscopic sheath pipe assembly according to claim 1, it is characterized in that described ripple Billiard apparatus (1-6) is annular ripple concentric structure, can make flexible channel (1-1) in the vertical direction in downward contraction state or extended state upwards, can move in the horizontal direction simultaneously.

4. single-hole laparoscopic sheath pipe assembly according to claim 1, is characterized in that the material of flexible shroud (1), dual gas check valve (2-1) is silica gel or latex.

5. single-hole laparoscopic sheath pipe assembly according to claim 1, is characterized in that the dual gas check valve that the upper insertion of flexible channel (1-1) conduit is provided with is the dual-seal that sealing ring and air-stopping valve form.

6. single-hole laparoscopic sheath pipe assembly according to claim 1, the quantity that it is characterized in that flexible channel (1-1) is 3,4,5 or 6.

7. single-hole laparoscopic sheath pipe assembly according to claim 1, is characterized in that the internal diameter of instrument guide (2-2) is respectively 3 millimeters, 5 millimeters, 10 millimeters or 12 millimeters of specifications.

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