CN113729897B - A miniature phalanx extension device for hand and foot surgery - Google Patents

Abstract

The invention discloses a miniature phalanx extension device for hand and foot surgery, which belongs to the technical field of surgical equipment. A miniature phalanx extension device for hand and foot surgery, comprising a hollow cylinder, an expansion assembly is arranged inside the hollow cylinder, and an expansion frame is connected to the expansion assembly through the hollow cylinder; an adjustment assembly is connected to the expansion assembly through the expansion frame and the holding assembly, the adjacent adjustment assembly and the holding assembly are flexibly connected through the connecting assembly; the holding assembly located in the center and the adjusting assembly are connected by an elastic telescopic rod, and the elastic telescopic rod is equipped with a spring member C; four limit chutes are provided on the expansion frame, and an inner slider is slidably connected to the limit chute; the present invention solves the problem that the phalanx extension device in the prior art cannot pass through the knuckles and finger pulps It is cumbersome to adopt adaptive fixation measures and disassemble from the affected area, and it is easy to cause secondary trauma to the affected area due to improper force.

Description

A miniature phalanx extension device for hand and foot surgery

technical field

The invention belongs to the technical field of surgical equipment, in particular to a miniature phalanx extension device for hand and foot surgery.

Background technique

Bone elongation, that is, distraction osteogenesis, is to cut the bone, retain the soft tissue and blood supply, fix the two ends with a special traction device, apply the tension stress law to gradually apply tension to slowly pull the bone segment, continuously stimulate the body tissue, and stimulate the bone segment. The regenerative potential of human tissue enables the formation of new bone in the osteotomy gap to achieve the purpose of bone regeneration. When the phalanx is shortened due to trauma or congenital reasons, the phalanx needs to be extended to make the shortened phalanx reach the normal length.

However, the phalanx extension device in the prior art cannot adopt adaptive fixation measures for the phalanx and the pulp of the finger. The phalanx extension process is unstable and the phalanx is easily deformed when extended, and it is troublesome to disassemble from the affected area, which is easy to cause damage to the affected area due to improper force. secondary trauma; therefore, the present invention provides a miniature phalanx extension device for hand and foot surgery to solve the above problems.

Contents of the invention

The purpose of the present invention is in order to solve the following problems in the prior art:

(1) The phalanx extension device in the prior art cannot adopt adaptive fixation measures on the knuckles and finger pulps, the phalanx extension process is unstable and the phalanx is easily deformed during extension; and it is troublesome to disassemble from the affected area, and it is easy to damage the affected area due to improper force cause secondary trauma.

In order to achieve the above object, the present invention adopts the following technical solutions:

A miniature phalanx extension device for hand and foot surgery, comprising a hollow cylinder, an expansion assembly is arranged inside the hollow cylinder, and an expansion frame is connected to the expansion assembly through the hollow cylinder, and the expansion frame is connected to one side of the hollow cylinder The expansion assembly is connected with an adjustment assembly and a holding assembly through the extension frame, and the adjacent adjustment assembly and the holding assembly are movably connected through the connecting assembly; the holding assembly and the adjustment assembly located in the center are connected by an elastic telescopic rod, The outer movable sleeve of the elastic telescopic rod is provided with a spring member C.

Preferably, four limit chutes are provided on the expansion frame, and an inner slider is slidably connected to the limit chute; a connecting rod is fixedly connected to the front end of the inner slider, and the end of the connecting rod is connected to the Tight component connections.

Preferably, a containment ring is fixedly connected to the center of the expansion frame away from the hollow cylinder, and a flexible cover is movably connected to the center of the containment ring through a spring member A, and the flexible cover is in contact with the fingertip.

Preferably, the expansion assembly includes an outer sleeve, the end of the outer sleeve is slidably connected to the outside of the inner sleeve, and one end of the inner sleeve is fixedly connected to the side of the center of the expansion frame away from the containing ring; the other end of the inner sleeve is A threaded column is threadedly connected, and a knob is fixedly connected to the front end of the threaded column, and the knob extends outward through the front end of the outer casing, and the knob rotates and engages with the front end of the outer casing.

Preferably, four connection seats are fixedly connected to the outer wall of the outer sleeve, and the front and rear ends of the connection seats are respectively connected to connecting oblique rods; There is an engaging protrusion, and an engaging groove is provided inside the hollow cylinder, and the engaging plate and the hollow cylinder are matched with the engaging groove through the engaging protrusion.

Preferably, the clamping assembly includes a clamping block A and a clamping block B, and the clamping block A and the clamping block B are arranged at intervals; The clamping parts and the positioning parts, the four groups of the clamping parts and the positioning parts are connected end to end.

Preferably, the clamping piece includes two clamping rods, and the clamping rods are respectively rotatably connected to the inner sides of the clamping block A and the clamping block B through the rotating column, and the front end of the clamping rod is provided with a magnetic suction arc block The locating pieces are respectively fixedly connected to the inner sides of the holding block A and the holding block B, the end of the locating piece is fixedly connected to a central column, and the magnetic arc block is movably clamped to the outside of the central column.

Preferably, the adjustment assembly includes two sets of adjustment blocks A and B, the centers of the two adjustment blocks A are fixedly connected with accommodating sleeves, and the centers of the two adjustment blocks B are fixedly connected with extension rods; The outside of the extension rod is movably sleeved with a spring part B, and the two ends of the extension rod are respectively inserted into two receiving sleeves; the adjacent adjustment block A and the holding block A are connected by elastic telescopic rods, The adjacent adjustment block A and the holding block A are connected by elastic telescopic rods, and the adjacent adjustment block B and the holding block B are connected by elastic telescopic rods.

Preferably, the connection assembly includes a positioning block A and a positioning block B, the positioning block A is fixedly connected to the outside of the holding block A or the holding block B, and the positioning block B is fixedly connected to the adjusting block A or the adjusting block B Outside: the center of the adjustment block A is fixedly connected with a threaded pipe, the front end of the threaded pipe is threaded with a threaded inner rod, the threaded inner rod is threaded at the center of the positioning block B, and the end of the threaded inner rod is matched with a micro motor.

Compared with the prior art, the present invention provides a miniature phalanx extension device for hand and foot surgery, which has the following beneficial effects:

(1) In the present invention, by setting up the expansion assembly, firstly pass the finger required for phalange extension from the adjustment assembly at the end through the first adjustment assembly, the first holding assembly, the second adjustment assembly and For the second clinging component, the fingertips are pressed against the flexible covering shell inside the accommodating ring, and then the two sets of clinging components are respectively located at two knuckles and two The adjustment components are respectively adaptively located at the pulps of the two fingers, and a flexible layer is arranged inside the holding component and the adjustment component, so as to be in flexible contact with the skin of the fingers.

(2) When the device is in use, the adjusting component and the holding component can be expanded or tightened by adjusting the expansion component, that is, by turning the knob at the end of the threaded column to make the threaded column rotate, and the threaded column can drive the outer sleeve to move forward when the threaded column is rotated , the outer casing drives the engaging plate to expand outward through the connecting slanting rod, under the limit action of the inner slider and the expansion frame, the engaging plate gradually contacts the hollow cylinder until it engages with the engaging groove on the inner wall of the hollow cylinder, At this time, the inner slide block and the connecting rod can drive the adjustment assembly and the holding assembly to expand, so that the device can be easily removed from the patient's finger.

(3) In the present invention, by setting the adjustment component and the clamping component, when the expansion component drives the adjustment component and the clamping component to expand or tighten: the distance between the adjustment block A and the adjustment block B in the adjustment component changes, thereby driving the extension The rod slides in or out along the containing sleeve, and cooperates with the spring part B to adjust the contact with the skin of the finger; the holding block A and the holding block B in the holding assembly need to be opened first in the process of unfolding or tightening The clamping part makes the clamping part and the positioning part out of the locked state, and then drives the clamping part and the positioning part to move when the distance between the clamping block A and the clamping block B changes, so as to facilitate the installation and removal of the device.

(4) By setting multiple sets of connecting components in the present invention, the micro-motor can drive the threaded inner rod to rotate during use, so that the threaded inner rod extends inward or outward along the threaded pipe, and then adjusts the adjacent adjustment components and the tightness The distance between the components, the adjusting component and the holding component located in the middle can also be adjusted through the elastic telescopic rod and the spring member C, so as to adapt to the length of the knuckles of different patients.

Description of drawings

Fig. 1 is a structural schematic diagram of a miniature phalanx extension device for hand and foot surgery proposed by the present invention;

Fig. 2 is a structural schematic view of Fig. 1 turning 180 degrees in a miniature phalanx extension device for hand and foot surgery proposed by the present invention;

Fig. 3 is a partial structural schematic diagram of a miniature phalanx extension device for hand and foot surgery proposed by the present invention;

Fig. 4 is a schematic diagram of the internal structure of the hollow cylinder in a miniature phalanx extension device for hand and foot surgery proposed by the present invention;

Fig. 5 is a schematic diagram of disassembly of the expansion assembly in a miniature phalanx extension device for hand and foot surgery proposed by the present invention;

Fig. 6 is a second disassembled schematic diagram of the extension assembly in a miniature phalanx extension device for hand and foot surgery proposed by the present invention;

Fig. 7 is a schematic diagram of the connection between the expansion assembly, the adjustment assembly and the clasping assembly in a miniature phalanx extension device for hand and foot surgery proposed by the present invention;

Fig. 8 is a schematic diagram of the connection between the adjustment component and the clasping component in a miniature phalanx extension device for hand and foot surgery proposed by the present invention;

Fig. 9 is a second schematic diagram of the connection between the adjustment component and the clasping component in a miniature phalanx extension device for hand and foot surgery proposed by the present invention;

Fig. 10 is a disassembled schematic diagram of the adjusting component and the holding component in a miniature phalanx extension device for hand and foot surgery proposed by the present invention;

Fig. 11 is a schematic diagram of the connection between the positioning part and the clamping part in a miniature phalanx extension device for hand and foot surgery proposed by the present invention.

Explanation of symbols in the figure:

1. Hollow cylinder; 2. Expansion frame; 201. Containing ring; 202. Flexible cladding shell; 203. Spring piece A; 204. Inner slider; 3. Adjustment assembly; 301. Adjustment block A; 302. Adjustment block B; 303, accommodating sleeve; 304, extension rod; 305, spring part B; 4, holding component; 401, holding block A; 402, holding block B; 403, positioning part; 404, clamping part; 405, central column; 406, rotating column; 5, expansion assembly; 501, outer sleeve; 502, snap plate; 503, inner sleeve; 504, threaded column; Components; 601, positioning block A; 602, threaded pipe; 603, threaded inner rod; 604, positioning block B; 7, connecting rod; 8, elastic telescopic rod; 9, spring part C.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

In describing the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", " The orientation or positional relationship indicated by "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, so as to Specific orientation configurations and operations, therefore, are not to be construed as limitations on the invention.

Example 1:

Please refer to Figure 1-6, a miniature phalanx extension device for hand and foot surgery, including a hollow cylinder 1, an expansion assembly 5 is arranged inside the hollow cylinder 1, and the expansion assembly 5 passes through the hollow cylinder 1 and is connected with an extension frame 2, the extension frame 2 is connected to one side of the hollow cylinder 1; the expansion assembly 5 runs through the extension frame 2 and is connected with an adjustment assembly 3 and a holding assembly 4, and the adjacent adjustment assembly 3 and the holding assembly 4 are movably connected through the connecting assembly 6; the holding assembly located in the center The component 4 and the adjustment component 3 are connected by an elastic telescopic rod 8, and the external movable sleeve of the elastic telescopic rod 8 is provided with a spring member C9;

The extension frame 2 is provided with four limit chutes, and the inner slider 204 is slidably connected to the limit chute; the front end of the inner slider 204 is fixedly connected to the connecting rod 7, and the end of the connecting rod 7 is connected to the holding component 4;

The center of the expansion frame 2 away from the hollow cylinder 1 is fixedly connected with a containment ring 201, and the center of the containment ring 201 is movably connected with a flexible covering shell 202 through a spring member A203, and the flexible covering shell 202 is in contact with the fingertip;

The expansion assembly 5 includes an outer sleeve 501, the end of the outer sleeve 501 is slidably connected to the outside of the inner sleeve 503, and one end of the inner sleeve 503 is fixedly connected to the side of the center of the expansion frame 2 away from the receiving ring 201; the other end of the inner sleeve 503 is screwed to a Threaded column 504, the front end of the threaded column 504 is fixedly connected with a knob, the knob extends outward through the front end of the outer sleeve 501, and the knob rotates and engages with the front end of the outer sleeve 501;

The outer side wall of the outer sleeve 501 is fixedly connected with four connecting seats 506, and the front and rear ends of the connecting seat 506 are respectively connected with connecting oblique rods 505; Starting from the inside of the hollow cylinder 1, there is an engaging groove, and the engaging plate 502 and the hollow cylinder 1 match the engaging groove through the engaging protrusion;

In the present invention, by setting the expansion assembly 5, the fingers required for phalange extension are passed through the first adjustment assembly 3, the first clasping assembly 4, and the second adjustment assembly in turn from the adjustment assembly 3 at the end. 3 and the second clasp assembly 4, the fingertips are pressed against the flexible covering shell 202 inside the accommodating ring 201, and then the two sets of clasp assemblies 4 are respectively positioned by adjusting the clasp assembly 4 and the components in the adjustment assembly 3 The two knuckles and the two adjustment components 3 are respectively adaptively located at the two finger pulps, and the clasping component 4 and the adjustment component 3 are provided with a flexible layer inside, so as to be in flexible contact with the finger skin;

When the device is in use, the adjustment assembly 3 and the holding assembly 4 can be expanded or tightened by adjusting the expansion assembly 5, that is, the threaded column 504 can be rotated by turning the knob at the end of the threaded column 504, and the threaded column 504 can drive the outer sleeve when rotating 501 moves forward, the outer casing 501 drives the engaging plate 502 to expand outward through the connecting slanting rod 505, and under the limit action of the inner slider 204 and the expansion frame 2, the engaging plate 502 gradually contacts the hollow cylinder 1 until it touches the hollow cylinder The engaging grooves on the inner wall of the body 1 are correspondingly engaged. At this time, the inner slider 204 and the connecting rod 7 can drive the adjusting assembly 3 and the holding assembly 4 to unfold, so that the device can be easily removed from the patient's finger.

Example 2:

As shown in Figure 7-11, the differences based on Example 1 are:

The clamping assembly 4 includes a clamping block A401 and a clamping block B402, and the clamping block A401 and the clamping block B402 are arranged at intervals; a clamping part 404 and a positioning part 403 are arranged between the adjacent clamping blocks A401 and the clamping block B402 , the four groups of clamping parts 404 and the positioning parts 403 are connected end to end;

The clamping part 404 includes two clamping rods, the clamping rods are respectively connected to the inner sides of the clamping block A401 and the clamping block B402 through the rotating column 406, and the front end of the clamping rod is provided with a magnetic suction arc block; The inner side of the tight block A401 and the tight block B402 are fixedly connected, the end of the positioning piece 403 is fixedly connected with the central column 405, and the magnetic suction arc block is movably clamped on the outside of the central column 405;

The adjustment assembly 3 includes two sets of adjustment blocks A301 and B302. The center of the two adjustment blocks A301 is fixedly connected with the receiving sleeve 303, and the center of the two adjustment blocks B302 is fixedly connected with the extension rod 304; the extension rod 304 is externally movable There is a spring part B305, and the two ends of the extension rod 304 are respectively movably inserted in the two receiving sleeves 303;

In the present invention, by setting the adjusting component 3 and the clamping component 4, when the expanding component 5 drives the adjusting component 3 and the clamping component 4 to expand or tighten: the distance between the adjusting block A301 and the adjusting block B302 in the adjusting component 3 changes, Thus, the extension rod 304 is driven to slide in or out along the receiving sleeve 303, and cooperate with the spring member B305 to adjust the contact with the finger skin;

During the unfolding or tightening process of the clamping block A401 and the clamping block B402 in the clamping assembly 4, the clamping part 404 needs to be opened first, so that the clamping part 404 and the positioning part 403 are out of the locked state, and then the clamping block When the distance between the A401 and the clamping block B402 changes, the clamping part 404 and the positioning part 403 are respectively driven to move, thereby facilitating the installation and removal of the device.

Example 3:

As shown in Figure 8-10, the differences based on Embodiment 1-2 are:

The adjacent adjustment block A301 and the holding block A401 are connected by an elastic telescopic rod 8, and the adjacent adjustment block A301 and the holding block A401 are connected by an elastic telescopic rod 8 between the adjacent adjustment block B302 and the holding block B402. Elastic telescopic rod 8 is connected;

The connection assembly 6 includes a positioning block A601 and a positioning block B604, the positioning block A601 is fixedly connected to the outside of the holding block A401 or the holding block B402, the positioning block B604 is fixedly connected to the outside of the adjusting block A301 or the adjusting block B302; the center of the adjusting block A301 is fixedly connected There is a threaded pipe 602, the front end of the threaded pipe 602 is threaded with a threaded inner rod 603, the threaded inner rod 603 is threaded in the center of the positioning block B604, and the end of the threaded inner rod 603 is matched with a micro motor;

In the present invention, by setting multiple sets of connecting components 6, the micro motor can drive the threaded inner rod 603 to rotate during use, so that the threaded inner rod 603 extends inward or outward along the threaded pipe 602, and then adjusts the adjacent adjustment components 3 and The distance between the clasp assembly 4, the adjustment assembly 3 and the clasp assembly 4 in the middle can also be adjusted by the elastic telescopic rod 8 and the spring member C9, so as to adapt to the length of the knuckles of different patients.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.

Claims (3)

1. A miniature phalanx extension device for hand and foot surgery, comprising a hollow cylinder (1), characterized in that an expansion assembly (5) is arranged inside the hollow cylinder (1), and the expansion assembly (5) runs through the hollow The column body (1) is connected with an extension frame (2), and the extension frame (2) is connected with one side of the hollow column body (1); the expansion assembly (5) is connected with an adjustment assembly (3) through the extension frame (2). ) and the clamping component (4), the adjacent adjustment component (3) and the clamping component (4) are flexibly connected through the connecting component (6); the central clamping component (4) and the adjusting component (3) are connected by an elastic telescopic rod (8), and the external movable sleeve of the elastic telescopic rod (8) is provided with a spring member C (9); The extension frame (2) is provided with four limit chutes, and an inner slider (204) is slidably connected to the limit chute; the front end of the inner slider (204) is fixedly connected to a connecting rod (7 ), the end of the connecting rod (7) is connected with the holding component (4); The center of the extension frame (2) away from the hollow cylinder (1) is fixedly connected with a containment ring (201), and the center of the containment ring (201) is movably connected with a flexible covering shell (202) through a spring piece A (203). ), the flexible covering shell (202) is in contact with the fingertip; The expansion assembly (5) includes an outer sleeve (501), the end of the outer sleeve (501) is slidably connected to the outside of the inner sleeve (503), and one end of the inner sleeve (503) is fixedly connected to the extension frame (2) The center is away from the side of the containing ring (201); the other end of the inner casing (503) is threaded with a threaded column (504), and the front end of the threaded column (504) is fixedly connected with a knob, and the knob runs through the outer casing ( 501) the front end extends outward, and the knob is engaged with the front end of the outer casing (501) by rotation; The outer wall of the outer casing (501) is fixedly connected with four connecting seats (506), and the front and rear ends of the connecting seat (506) are respectively connected to connecting oblique rods (505) in rotation; the ends of the connecting oblique rods (505) An engaging plate (502) is rotationally connected, an engaging protrusion is provided on the outside of the engaging plate (502), an engaging groove is opened inside the hollow cylinder (1), and the engaging plate (502) and the hollow column The body (1) matches the engaging groove through the engaging protrusion; The clamping assembly (4) includes a clamping block A (401) and a clamping block B (402), and the clamping block A (401) and the clamping block B (402) are arranged at intervals; adjacent to the clamping block A clamping piece (404) and a positioning piece (403) are arranged between the clamping piece A (401) and the clamping piece B (402), and the four sets of clamping piece (404) and the positioning piece (403) between the end and the end connected; The clamping piece (404) includes two clamping rods, and the clamping rods are respectively connected to the inner sides of the clamping block A (401) and the clamping block B (402) through the rotating column (406). The front end of the closing rod is provided with a magnetic suction arc block; the positioning piece (403) is fixedly connected with the inside of the holding block A (401) and the holding block B (402) respectively, and the end of the positioning piece (403) is fixedly connected with a center A column (405), the magnetic arc block is movably clamped on the outside of the central column (405). 2. A miniature phalanx extension device for hand and foot surgery according to claim 1, characterized in that: the adjustment assembly (3) includes two sets of adjustment block A (301) and adjustment block B (302), the two The center of the adjustment block A (301) is fixedly connected with the containing sleeve (303), and the center of the two adjustment blocks B (302) is fixedly connected with the extension rod (304); the outer movable sleeve of the extension rod (304) The spring piece B (305) is connected, and the two ends of the extension rod (304) are movably inserted in the two receiving sleeves (303); the adjacent adjustment block A (301) and the holding block A (401 ) are connected by an elastic telescopic rod (8), and the adjacent adjustment block A (301) and the holding block A (401) are connected by an elastic telescopic rod (8) to the adjacent adjustment block B (302) It is connected with the holding block B (402) by an elastic telescopic rod (8). 3. A miniature phalanx extension device for hand and foot surgery according to claim 2, characterized in that: the connection assembly (6) includes a positioning block A (601) and a positioning block B (604), and the positioning block A (601) is fixedly connected to the outside of the holding block A (401) or the holding block B (402), and the positioning block B (604) is fixedly connected to the outside of the adjusting block A (301) or the adjusting block B (302); the The center of the adjustment block A (301) is fixedly connected with a threaded pipe (602), the front end of the threaded pipe (602) is threaded with a threaded inner rod (603), and the threaded inner rod (603) is threaded on the positioning block B ( 604) in the center, the end of the threaded inner rod (603) is matched with a micro motor.

Images