Surgical operation device applied to transverse carpal ligament cutting

Abstract

The utility model provides a surgical operation device applied to transverse carpal ligament cutting, relates to the technical field of medical instruments, and solves the technical problems that tissues in a carpal canal cannot be monitored in real time and the tissues in the carpal canal are possibly damaged due to sliding cutting of a bush-hook in the prior art. The device comprises a handle, an endoscope assembly, a driving assembly and a catheter assembly, the rear half section of the catheter assembly is installed in the handle, the front half section of the catheter assembly penetrates through the front end of the handle, one end of the endoscope assembly is installed at the rear end of the handle, the other end of the endoscope assembly penetrates through the catheter assembly, and the driving assembly is installed on the handle. One end of the driving assembly is connected to the front end of the handle, and the other end of the driving assembly penetrates through the front half section of the catheter assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a surgical operation device used for cutting transverse carpal ligament. Background Art

[0002] The commonly used carpal tunnel release surgery is to cut the transverse carpal ligament under direct vision by incising the skin, thereby achieving the purpose of releasing the carpal tunnel and decompressing the median nerve. However, this surgery requires cutting the skin that exceeds the width of the transverse carpal ligament to fully expose the transverse carpal ligament and avoid damage to the median nerve and nerves in the carpal tunnel. However, longer wounds increase the risk of wound infection, difficulty in healing, and scar hyperplasia.

[0003] The existing device is inserted between the transverse carpal ligament and the median nerve, and a hook knife is inserted from the strip groove on the device. The hook knife is pulled to slide and cut the transverse carpal ligament. However, the tissue in the carpal tunnel is prone to adhesion, and the sliding cutting of the hook knife may cause damage to the tissue in the carpal tunnel. Utility Model Content

[0004] The purpose of the utility model is to provide a surgical operation device for cutting the transverse carpal ligament, so as to solve the technical problems in the prior art that the tissue in the carpal tunnel cannot be monitored in real time and the sliding cutting of the hook knife may cause damage to the tissue in the carpal tunnel. The preferred technical solution among the many technical solutions provided by the utility model can produce many technical effects as described below.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides a surgical operation device for cutting transverse carpal ligament, comprising a handle, an endoscope assembly, a drive assembly and a catheter assembly, wherein the rear half of the catheter assembly is installed in the handle, the front half of the catheter assembly passes through the front end of the handle, one end of the endoscope assembly is installed at the rear end of the handle, the other end of the endoscope assembly passes through the catheter assembly, one end of the drive assembly is connected to the front end of the handle, and the other end of the drive assembly passes through the front half of the catheter assembly.

[0007] Optionally, the interior of the handle is a hollow structure, a connecting frame is provided on the inner wall of the handle, and the end of the catheter assembly is connected to the connecting frame;

[0008] The front end side wall of the handle is provided with a square hole, and the rear end side wall of the handle is provided with an open groove.

[0009] Optionally, a recessed portion is provided on the outer wall of the handle, and frosted particles are provided on the recessed portion.

[0010] Optionally, the catheter assembly includes a positioning sleeve, a metal sleeve and a transparent sleeve, the positioning sleeve is connected to the transparent sleeve through the metal sleeve, one end of the positioning sleeve is connected to the inner wall of the handle, the transparent sleeve passes through the front end of the handle, the endoscope assembly passes through the positioning sleeve, the metal sleeve and the transparent sleeve in sequence, and the drive assembly passes through the transparent sleeve.

[0011] Optionally, an upper channel and a lower channel are provided in the transparent sleeve, a through opening is provided on the free end of the transparent sleeve, the upper channel and the lower channel are both connected to the through opening, the upper channel is connected to the metal sleeve and the endoscope assembly passes through the upper channel, and the drive assembly passes through the lower channel.

[0012] Optionally, the endoscope assembly includes an endoscope body and an image sensor, the endoscope body and the image sensor are connected, the endoscope body is installed at the rear end of the handle, and the image sensor passes through the catheter assembly.

[0013] Optionally, the drive assembly includes a trigger, a compression spring, a tool holder connecting rod, a cylindrical pin I, a cylindrical pin II and a micro-knife, the trigger is installed at the front end of a handle and the trigger is rotatably connected to the handle, the tool holder connecting rod is located in the lower channel on the catheter assembly, the end of the trigger is in tangential contact with the rear end of the tool holder connecting rod, the compression spring is located between the rear end of the tool holder connecting rod and the front end of the handle, the front end of the tool holder connecting rod and the rear end of the micro-knife are rotatably connected via the cylindrical pin I, the middle section of the micro-knife is connected to the lower channel via the cylindrical pin II, and the free end of the micro-knife can pass through the through opening on the catheter assembly.

[0014] Optionally, the trigger includes an inclined press plate, a Z-shaped beam and a rotating shaft, the inclined press plate is connected to one end of the Z-shaped beam, the Z-shaped beam passes through the square hole on the handle and the Z-shaped beam is rotatably connected to the handle via the rotating shaft, the free end of the Z-shaped beam is set as an arc structure, and the arc structure is in tangential contact with the rear end of the tool holder connecting rod.

[0015] Optionally, anti-slip protrusions are provided on the inclined pressing plate.

[0016] Optionally, the rear end of the tool holder connecting rod is an eccentric cubic structure, a positioning column is provided on the eccentric cubic structure, and the compression spring is sleeved on the positioning column.

[0017] The utility model provides a surgical operation device for cutting the transverse carpal ligament. During the operation, a small horizontal incision can be formed at the midpoint of the palm side transverse carpal crease, ulnar side and transverse crease. The incision is called a transverse wrist incision. The front end of the catheter component is inserted into the transverse wrist incision. The endoscope component and the drive component both pass through the catheter component. The endoscope component can collect information inside the carpal tunnel, identify the median nerve in the carpal tunnel, and observe the current position of the median nerve to avoid accidental injury to the median nerve when the micro-knife on the drive component is pushed to perform the transverse carpal ligament surgical cutting, thereby improving the safety of the transverse carpal ligament cutting operation. The device can achieve the cutting of the transverse carpal ligament with a smaller surgical incision, can monitor the operation process in real time, improve the safety of the surgical cutting, and is easy to operate and can be operated with one hand, thereby solving the technical problems existing in the prior art that the tissue in the carpal tunnel cannot be monitored in real time and the sliding cutting of the hook knife may cause damage to the tissue in the carpal tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of a surgical operation device for cutting the transverse carpal ligament provided by an embodiment of the utility model;

[0020] Figure 2 It is a cross-sectional view of a surgical operating device for cutting the transverse carpal ligament provided by an embodiment of the utility model;

[0021] Figure 3 It is a structural schematic diagram of an endoscope assembly of a surgical operation device for cutting the transverse carpal ligament provided by an embodiment of the utility model;

[0022] Figure 4 It is a structural schematic diagram of a driving assembly of a surgical operation device for cutting the transverse carpal ligament provided by an embodiment of the utility model;

[0023] Figure 5 It is a structural schematic diagram of a catheter assembly of a surgical operation device for cutting the transverse carpal ligament provided by an embodiment of the utility model;

[0024] Figure 6 It is a structural schematic diagram of a handle of a surgical operating device for cutting the transverse carpal ligament provided by an embodiment of the utility model;

[0025] Figure 7It is a structural schematic diagram of a knife holder connecting rod of a surgical operation device for cutting the transverse carpal ligament provided by an embodiment of the utility model;

[0026] Figure 8 It is a schematic structural diagram of a trigger of a surgical operating device for cutting the transverse carpal ligament provided by an embodiment of the utility model;

[0027] Fig. 9 It is a structural schematic diagram of a transparent sleeve of a surgical operation device for cutting the transverse carpal ligament provided by an embodiment of the utility model.

[0028] In the figure, 1, handle; 11, square hole; 12, opening slot; 13, recessed portion;

[0029] 2. Endoscope assembly; 21. Endoscope body; 22. Image sensor;

[0030] 3. Driving assembly; 31. Trigger; 311. Tilt plate; 312. Z-shaped beam; 313. Rotating shaft; 32. Compression spring; 33. Tool holder connecting rod; 331. Eccentric cube structure; 332. Positioning column; 34. Cylindrical pin I; 35. Cylindrical pin II; 36. Micro knife;

[0031] 4. Catheter assembly; 41. Positioning sleeve; 42. Metal sleeve; 43. Transparent sleeve; 431. Upper channel; 432. Lower channel; 433. Through port. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0033] In the description of the present utility model, it should be noted that, unless otherwise specified, "multiple" means two or more; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0035] The utility model provides a surgical operation device for cutting transverse carpal ligament, comprising a handle 1, an endoscope component 2, a drive component 3 and a catheter component 4, wherein the rear half of the catheter component 4 is installed in the handle 1, the front half of the catheter component 4 passes through the front end of the handle 1, one end of the endoscope component 2 is installed at the rear end of the handle 1, the other end of the endoscope component 2 passes through the catheter component 4, one end of the drive component 3 is connected to the front end of the handle 1, and the other end of the drive component 3 passes through the front half of the catheter component 4. The utility model provides a surgical operation device for cutting the transverse carpal ligament. During the operation, a small horizontal incision can be formed at the midpoint of the palm side transverse carpal crease and the transverse crease. The incision is called a transverse carpal incision. The front end of the catheter component 4 is inserted into the transverse carpal incision. The endoscope component 2 and the drive component 3 both pass through the catheter component 4. The endoscope component 2 can collect information inside the carpal tunnel, identify the median nerve in the carpal tunnel, and observe the current position of the median nerve to avoid accidental injury to the median nerve when the micro-knife 36 on the drive component 3 is pushed to perform the transverse carpal ligament surgical cutting, thereby improving the safety of the transverse carpal ligament cutting operation. The device can achieve the cutting of the transverse carpal ligament with a smaller surgical incision, can monitor the operation process in real time, improve the safety of the surgical cutting, and is easy to operate and can be operated with one hand, thereby solving the technical problems existing in the prior art that the tissue in the carpal tunnel cannot be monitored in real time and the sliding cutting of the hook knife may cause damage to the tissue in the carpal tunnel.

[0036] As an optional embodiment, the interior of the handle 1 is a hollow structure, and a connecting frame is provided on the inner wall of the handle 1. The connecting frame is located at the rear end of the handle 1, and the end of the catheter assembly 4 is connected to the connecting frame, that is, the end of the positioning sleeve 41 is connected to the connecting frame;

[0037] A square hole 11 is provided on the front side wall of the handle 1 , and an open slot 12 is provided on the rear side wall of the handle 1 .

[0038] As an optional implementation, the outer contour of the handle 1 is designed according to the principles of ergonomics. A recessed portion 13 is provided on the outer wall of the handle 1. There are five recessed portions 13, two recessed portions 13 on each side of the handle 1, and a recessed portion 13 on the lower side of the front end of the handle 1 to facilitate gripping by the middle finger during surgery. Frosted particles are provided on the recessed portions 13 to increase the gripping force during surgery.

[0039] As an optional embodiment, the catheter assembly 4 includes a positioning sleeve 41, a metal sleeve 42 and a transparent sleeve 43. The positioning sleeve 41 and the transparent sleeve 43 are connected via the metal sleeve 42. One end of the positioning sleeve 41 is connected to the inner wall of the handle 1. The transparent sleeve 43 passes through the front end of the handle 1. The endoscope assembly 2 passes through the positioning sleeve 41, the metal sleeve 42 and the transparent sleeve 43 in sequence. The drive assembly 3 passes through the transparent sleeve 43, that is, the tool holder connecting rod 33 passes through the transparent sleeve 43.

[0040] As an optional embodiment, an upper channel 431 and a lower channel 432 are provided in the transparent sleeve 43, and a through-port 433 is provided on the free end of the transparent sleeve 43, and the upper channel 431 and the lower channel 432 are both connected to the through-port 433, and the end of the metal sleeve 42 is located in the upper channel 431, and the upper channel 431 is connected to the metal sleeve 42, and the endoscope assembly 2 passes through the upper channel 431, and the drive assembly 3 passes through the lower channel 432. The cross-sectional shapes of the upper channel 431 and the image sensor 22 are both circular, and the cross-sectional shapes of the lower channel 432 and the tool holder connecting rod 33 are both trapezoidal. The transparent sleeve 43 is made of transparent medical-grade PVP, and has a scale mark on the upper surface.

[0041] As an optional embodiment, the endoscope assembly 2 includes an endoscope body 21 and an image sensor 22, which are connected. The endoscope body 21 is installed at the rear end of the handle 1, that is, the endoscope body 21 is installed at the opening groove 12, and the image sensor 22 passes through the catheter assembly 4. The image sensor 22 passes through the positioning sleeve 41, the metal sleeve 42 and the upper channel 431 in sequence, and the end of the image sensor 22 is exposed at the opening 433, which is convenient for the image sensor 22 to collect information inside the carpal tunnel, identify the median nerve in the carpal tunnel, and observe the current position of the median nerve.

[0042] As an optional embodiment, the drive assembly 3 includes a trigger 31, a compression spring 32, a tool holder connecting rod 33, a cylindrical pin I 34, a cylindrical pin II 35 and a micro-blade 36. The trigger 31 is installed at the front end of the handle 1 and the trigger 31 is rotatably connected to the handle 1. The tool holder connecting rod 33 is located in the lower channel 432 on the catheter assembly 4. The end of the trigger 31 is in tangential contact with the rear end of the tool holder connecting rod 33. The compression spring 32 is located between the rear end of the tool holder connecting rod 33 and the front end of the handle 1. The front end of the tool holder connecting rod 33 and the rear end of the micro-blade 36 are rotatably connected via the cylindrical pin I 34. The middle section of the micro-blade 36 is connected to the lower channel 432 via the cylindrical pin II 35, and the free end of the micro-blade 36 can pass through the opening 433 on the catheter assembly 4.

[0043] As an optional embodiment, the trigger 31 includes an inclined pressing plate 311, a Z-shaped beam 312 and a rotating shaft 313. The inclined pressing plate 311 is connected to one end of the Z-shaped beam 312. The Z-shaped beam 312 passes through the square hole 11 on the handle 1 and the Z-shaped beam 312 is rotatably connected to the handle 1 through the rotating shaft 313. The free end of the Z-shaped beam 312 is set as an arc structure, and the arc structure is tangentially in contact with the rear end of the tool holder connecting rod 33. The surface of the inclined pressing plate 311 is provided with anti-slip protrusions to increase the friction between the finger and the inclined pressing plate 311.

[0044] As an optional embodiment, the micro-knife 36 is provided with an arc-shaped knife groove and a rotating hole, the cylindrical pin II 35 is connected to the arc-shaped knife groove, and the rotating hole is rotatably connected to the cylindrical pin I 34. The rear end of the tool holder connecting rod 33 is an eccentric cubic structure 331, and a positioning column 332 is provided on the eccentric cubic structure, and the compression spring 32 is sleeved on the positioning column 332.

[0045] By pressing the tilting plate 311, the Z-shaped crossbeam 312 will rotate, thereby pushing the tool holder connecting rod 33 to move forward, and the compression spring 32 is compressed at the same time, and then the tool holder connecting rod 33 will push the micro knife 36 to rotate, so that the blade of the micro knife 36 extends out of the through hole 433, and then the transverse carpal ligament can be cut by pulling the handle 1. When the tilting plate 311 is no longer pressed, under the action of the compression spring 32, the micro knife 36, the tool holder connecting rod 33 and the Z-shaped crossbeam 312 return to their original positions.

[0046] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A surgical operation device for cutting transverse carpal ligament, characterized in that: It comprises a handle (1), an endoscope assembly (2), a drive assembly (3) and a catheter assembly (4), wherein: The rear half of the catheter assembly (4) is installed in the handle (1), and the front half of the catheter assembly (4) passes through the front end of the handle (1); one end of the endoscope assembly (2) is installed at the rear end of the handle (1), and the other end of the endoscope assembly (2) passes through the catheter assembly (4); one end of the drive assembly (3) is connected to the front end of the handle (1), and the other end of the drive assembly (3) passes through the front half of the catheter assembly (4).

2. A surgical operation device for cutting the transverse carpal ligament according to claim 1, characterized in that: The interior of the handle (1) is a hollow structure, a connecting frame is provided on the inner wall of the handle (1), and the end of the catheter assembly (4) is connected to the connecting frame; The front end side wall of the handle (1) is provided with a square hole (11), and the rear end side wall of the handle (1) is provided with an open groove (12).

3. A surgical operation device for cutting transverse carpal ligament according to claim 1, characterized in that: A recessed portion (13) is provided on the outer wall of the handle (1), and frosted particles are provided on the recessed portion (13).

4. A surgical operation device for cutting transverse carpal ligament according to claim 1, characterized in that: The catheter assembly (4) comprises a positioning sleeve (41), a metal sleeve (42) and a transparent sleeve (43); the positioning sleeve (41) and the transparent sleeve (43) are connected via the metal sleeve (42); one end of the positioning sleeve (41) is connected to the inner wall of the handle (1); the transparent sleeve (43) passes through the front end of the handle (1); the endoscope assembly (2) passes through the positioning sleeve (41), the metal sleeve (42) and the transparent sleeve (43) in sequence; and the drive assembly (3) passes through the transparent sleeve (43).

5. A surgical operation device for cutting the transverse carpal ligament according to claim 4, characterized in that: An upper channel (431) and a lower channel (432) are arranged in the transparent sleeve (43); a through opening (433) is arranged on the free end of the transparent sleeve (43); the upper channel (431) and the lower channel (432) are both connected to the through opening (433); the upper channel (431) is connected to the metal sleeve (42) and the endoscope assembly (2) passes through the upper channel (431); and the drive assembly (3) passes through the lower channel (432).

6. The surgical operation device for cutting the transverse carpal ligament according to claim 1, characterized in that: The endoscope assembly (2) comprises an endoscope body (21) and an image sensor (22), wherein the endoscope body (21) and the image sensor (22) are connected to each other, the endoscope body (21) is mounted at the rear end of the handle (1), and the image sensor (22) passes through the catheter assembly (4).

7. A surgical operation device for cutting transverse carpal ligament according to claim 1, characterized in that: The driving assembly (3) comprises a trigger (31), a compression spring (32), a knife holder connecting rod (33), a cylindrical pin I (34), a cylindrical pin II (35) and a micro-knife (36); the trigger (31) is mounted at the front end of the handle (1) and the trigger (31) is rotatably connected to the handle (1); the knife holder connecting rod (33) is located in the lower channel (432) on the catheter assembly (4); the end of the trigger (31) is connected to the end of the knife holder connecting rod (33) The rear ends are in tangential contact, the compression spring (32) is located between the rear end of the tool holder connecting rod (33) and the front end of the handle (1), the front end of the tool holder connecting rod (33) and the rear end of the micro-knife (36) are rotatably connected through the cylindrical pin I (34), the middle section of the micro-knife (36) is connected to the lower channel (432) through the cylindrical pin II (35), and the free end of the micro-knife (36) can pass through the opening (433) on the catheter assembly (4).

8. A surgical operation device for cutting the transverse carpal ligament according to claim 7, characterized in that: The trigger (31) comprises an inclined pressing plate (311), a Z-shaped crossbeam (312) and a rotating shaft (313); the inclined pressing plate (311) is connected to one end of the Z-shaped crossbeam (312); the Z-shaped crossbeam (312) passes through a square hole (11) on the handle (1); and the Z-shaped crossbeam (312) and the handle (1) are rotatably connected via the rotating shaft (313); the free end of the Z-shaped crossbeam (312) is arranged as an arc structure, and the arc structure is in tangential contact with the rear end of the tool holder connecting rod (33).

9. The surgical operation device for cutting the transverse carpal ligament according to claim 7, characterized in that: The micro knife (36) is provided with an arc-shaped knife groove and a rotation hole.

10. The surgical operation device for cutting the transverse carpal ligament according to claim 7, characterized in that: The rear end of the tool holder connecting rod (33) is an eccentric cubic structure (331), a positioning column (332) is provided on the eccentric cubic structure, and the compression spring (32) is sleeved on the positioning column (332).

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