Spinal cord transection knife

Abstract

The utility model provides a surgical spinal cord transecting knife, comprising: a housing, a support plate, a circumcision assembly, a push rod and a reset assembly. The housing has a slideway that runs through two opposite ends of the housing. The circumcision assembly comprises a fixed seat mounted on the support plate, and a first cutter and a second cutter rotatably connected to the fixed seat. The push rod is movably arranged in the slideway, and the two ends of the push rod extend out of the first end and the second end of the housing by a certain length respectively, and the part of the push rod extending out of the first end of the housing is suitable for driving the first cutter and the second cutter to move in a direction away from or close to each other. An elastic clamp is arranged on the push rod, and a clamping hole is arranged on the housing, and the elastic clamp is suitable for clamping with the clamping hole. The reset assembly is arranged between the slideway and the push rod, and is suitable for driving the push rod to perform a reset movement. In this process, the operator only needs to push the push rod until the first cutter and the second cutter are in a state ready to cut, which is simple to operate, improves the surgical efficiency, and provides favorable conditions for the success of the operation.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a spinal cord transecting knife for surgery. Background Art

[0002] With the new understanding of the plasticity after central nervous system injury, more and more scholars have devoted themselves to the research on nerve regeneration after spinal cord injury and conducted a large number of animal experiments, mainly using sharp blades to selectively perform full transect, half transect, partial severance, or block-shaped defects on the spinal cord, forming spinal cord transection, half transect injury or spinal cord defect.

[0003] The existing spinal cord transects used in surgery require doctors to operate very delicately when using them. When unfolding the transect, the doctor needs to maintain a relatively long posture until the patient's site is found. When the doctor maintains the posture of unfolding the transect, his hands will inevitably shake slightly, so that the transect needs to be adjusted multiple times, which delays working time and may even delay the timing of the operation. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the inconvenience of operating the transecting knife in the prior art, which may delay the operation time or even the operation opportunity, thereby providing a spinal cord transecting knife for surgery.

[0005] In order to solve the above problems, the utility model provides a surgical spinal cord transection knife, comprising:

[0006] A housing having slideways extending through opposite ends of the housing;

[0007] A support plate is arranged at the first end of the shell, and an end surface of the support plate and the slideway are staggered in their respective extension directions;

[0008] The circular cutting assembly comprises a fixing base mounted on the support plate, and a first cutting knife and a second cutting knife rotatably connected to the fixing base;

[0009] A push rod is movably arranged in the slideway, and two ends of the push rod extend out of the first end and the second end of the housing by a certain length, respectively, and the portion of the push rod extending out of the first end of the housing is suitable for driving the first cutter and the second cutter to move away from or toward each other;

[0010] An elastic clamping piece is arranged on the push rod, a clamping hole is arranged on the housing, and the elastic clamping piece is suitable for clamping with the clamping hole;

[0011] The reset assembly is arranged between the slideway and the push rod and is suitable for driving the push rod to perform a reset movement.

[0012] Optionally, a rotating structure is provided on the support plate, and the rotating structure comprises:

[0013] A rotating ring, rotatably arranged on the support plate, and having a toothed disc on the outer edge;

[0014] A first transmission rod, one end of which is rotatably connected to the toothed disc, and the other end of which is rotatably connected to the edge of the first cutter;

[0015] A second transmission rod, one end of which is rotatably connected to the toothed disc, and the other end of which is rotatably connected to the edge of the second cutter;

[0016] A tooth plate is arranged at the end of the push rod extending out of the first end of the housing, and the tooth plate has a tooth bar meshing with the toothed disc.

[0017] Optionally, the fixed seat includes a bracket and a fixing ring fixedly connected to the bracket, and a first rotating shaft and a second rotating shaft are respectively provided at opposite ends of the bottom of the fixing ring, the edge of the first cutter has an axial hole that cooperates with the first rotating shaft, and the second cutter has an axial hole that cooperates with the second rotating shaft; the first transmission rod is suitable for driving the first cutter to rotate around the first rotating shaft, and the second transmission rod is suitable for driving the second cutter to rotate around the second rotating shaft.

[0018] Optionally, the bracket includes two support columns and cross beams respectively on top of the support columns, the two support columns are arranged opposite to each other, the two cross beams extend in opposite directions, and the fixing rings are fixedly arranged at the ends of the two cross beams.

[0019] Optionally, the rotating ring is located between the two supporting columns, and the fixed ring is located on the inner ring side of the rotating ring.

[0020] Optionally, the reset component is an elastic member, one end of the elastic member is fixedly connected to the push rod, and the other end of the elastic member is fixedly connected to the inner wall of the slideway.

[0021] Optionally, the blades of the first cutter and the second cutter are arc-shaped and complementary, and the outer edges of the first cutter and the second cutter are combined to form a circle.

[0022] Optionally, a limiting groove is provided on the inner wall of the slideway near the second end, and the limiting groove is suitable for abutting and cooperating with the elastic clip.

[0023] Optionally, a boss is provided at the end of the push rod.

[0024] Optionally, a connecting rod is provided between the push rod and the tooth plate.

[0025] The utility model has the following advantages:

[0026] The utility model provides a surgical spinal cord transecting knife, comprising: a shell, a support plate, a circumcision assembly, a push rod and a reset assembly. The shell has a slideway that runs through two opposite ends of the shell. The support plate is arranged at the first end of the shell, and the end surface of the support plate and the slideway are staggered in their respective extension directions. The circumcision assembly comprises a fixed seat mounted on the support plate, and a first cutter and a second cutter rotatably connected to the fixed seat. The push rod is movably arranged in the slideway, and the two ends of the push rod extend out of the first end and the second end of the shell by a certain length respectively, and the part of the push rod extending out of the first end of the shell is suitable for driving the first cutter and the second cutter to move in a direction away from or close to each other. An elastic clamp is arranged on the push rod, and a clamping hole is arranged on the shell, and the elastic clamp is suitable for clamping with the clamping hole. The reset assembly is arranged between the slideway and the push rod, and is suitable for driving the push rod to perform a reset movement.

[0027] The push rod can slide in the direction of the first end or in the direction of the second end opposite to the first end in the slideway, thereby driving the first cutter and the second cutter to move in the direction of approaching or moving away from each other. When in use, the push rod can be pushed in the direction of the first end, and the first cutter and the second cutter move in the direction of moving away from each other. At the same time, the elastic clamp is clamped into the clamp hole, and the reset assembly obtains the restoring force, so that the first cutter and the second cutter can be kept in a state ready to cut. When aligning the tissue position to be cut, the elastic clamp can be pressed to make the elastic clamp return to the slideway, and the reset assembly drives the push rod to slide in the direction of the second end through the restoring force, and the first cutter and the second cutter move in the direction of approaching each other, thereby cutting the tissue. In this process, the operator only needs to push the push rod to the state where the first cutter and the second cutter are ready to cut, and then the housing can be held to perform the operation of aligning the tissue, without always keeping the first cutter and the second cutter in the open state. Moreover, when cutting, only the elastic clamp needs to be pressed, which is simple to operate, can perform the cutting operation more smoothly, improves the surgical efficiency, and provides favorable conditions for the success of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 The schematic diagram of the structure of the spinal cord transecting knife used for surgery in this embodiment is shown;

[0030] Figure 2 A schematic diagram of the structure of the housing and the push rod in this embodiment is shown;

[0031] Figure 3 The schematic diagram of the structure of the ring cutting assembly in this embodiment is shown;

[0032] Figure 4 The schematic diagram of the structure of the first cutter and the second cutter in this embodiment is shown.

[0033] Description of reference numerals:

[0034] 1. Shell; 101. Outer wall; 102. Clamping hole; 201. Push rod; 202. Elastic clamp; 203. Boss; 204. Reset assembly; 205. Connecting rod; 206. Tooth plate; 3. Support plate; 401. Rotating ring; 402. Bracket; 4031. First transmission rod; 4032. Second transmission rod; 501. Fixed ring; 502. Clamping slot; 5031. First rotating shaft; 5032. Second rotating shaft; 504. First cutter; 505. Second cutter. DETAILED DESCRIPTION

[0035] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0039] like Figure 1 and Figure 2 As shown, in this embodiment, a spinal cord transecting knife for surgery is provided, including: a shell 1, a support plate 3, a circumcision assembly 4, a push rod 201 and a resetting assembly 204.

[0040] The housing 1 has slideways penetrating two opposite ends of the housing 1. The housing 1 may be cylindrical, which is convenient for an operator to hold.

[0041] The support plate 3 is arranged at the first end of the housing 1, and the end surface of the support plate 3 and the slideway are arranged in a staggered manner in their respective extension directions. That is, the extension direction of the support plate 3 is parallel to the axial direction of the slideway, and the arrangement position of the support plate 3 avoids the position where the slideway is located at the opening of the first end, so that the support plate 3 can avoid blocking the movement of the push rod 201, and at the same time, the ring cutting assembly 4 can be stably supported at the opening position of the slideway at the first end, so as to facilitate the transmission of the push rod 201 and the ring cutting assembly 4.

[0042] The circular cutting assembly 4 includes a fixed seat mounted on the support plate 3, and a first cutter 504 and a second cutter 505 rotatably connected to the fixed seat. The first cutter 504 and the second cutter 505 move away from each other to enter a state of preparing for cutting, so that a space is left between the first cutter 504 and the second cutter 505 to allow tissue to enter, and the first cutter 504 and the second cutter 505 move toward each other to complete the cutting action.

[0043] The push rod 201 is movably arranged in the slideway, and both ends of the push rod 201 extend out of the first end and the second end of the shell 1 by a certain length respectively. The part of the push rod 201 extending out of the first end of the shell 1 is suitable for driving the first cutter 504 and the second cutter 505 to move away from or towards each other.

[0044] The elastic clamp 202 is arranged on the push rod 201, and the housing 1 is provided with a clamp hole 102. The side wall through which the clamp hole 102 passes connects the slideway and the outer wall 101 of the housing 1. The elastic clamp 202 is suitable for clamping with the clamp hole 102. For example, when the elastic clamp 202 is in the clamping position, it can extend out of the clamp hole 102 by a certain length. The elastic clamp 202 can move with the push rod 201, thereby entering the clamp hole 102 or leaving the clamp hole 102.

[0045] The reset assembly 204 is arranged between the slideway and the push rod 201, and is suitable for driving the push rod 201 to perform a reset movement. When the push rod 201 moves toward the first end, the reset assembly 204 obtains a restoring force.

[0046] For example, the push rod 201 can slide in the slideway toward the first end or toward the second end opposite to the first end, thereby driving the first cutter 504 and the second cutter 505 to move toward or away from each other. When in use, the push rod 201 can be pushed toward the first end, and the first cutter 504 and the second cutter 505 move away from each other. At the same time, the elastic clamp 202 is clamped into the clamp hole 102, and the reset assembly 204 obtains a restoring force, so that the first cutter 504 and the second cutter 505 can remain in a state ready to cut.

[0047] When the tissue position to be cut is aligned, the elastic clamp 202 can be pressed to return to the slideway, and the reset assembly 204 drives the push rod 201 to slide toward the second end through the restoring force, and the first cutter 504 and the second cutter 505 move toward each other, thereby removing the tissue.

[0048] During this process, the operator only needs to push the push rod 201 until the first cutter 504 and the second cutter 505 are in a state ready for cutting, and then the shell 1 can be held to align the tissue without always applying external force to keep the first cutter 504 and the second cutter 505 in an open state. Moreover, when cutting, only the elastic clip 202 needs to be pressed, which is simple to operate and can perform the cutting operation more smoothly, thereby improving the efficiency of the operation and providing favorable conditions for the success of the operation.

[0049] like Figure 1 and Figure 3 As shown, in this embodiment, a rotating structure is provided on the support plate 3, and the rotating structure includes: a rotating ring 401, a first transmission rod 4031, a second transmission rod 4032 and a tooth plate 206. The rotating ring 401 is rotatably provided on the support plate 3, and has a toothed disc on the outer edge. One end of the first transmission rod 4031 is rotatably connected to the rotating ring 401, and the other end is rotatably connected to the edge of the first cutter 504. One end of the second transmission rod 4032 is rotatably connected to the rotating ring 401, and the other end is rotatably connected to the edge of the second cutter 505. The toothed plate 206 is provided at the end of the first end of the push rod 201 extending out of the housing, and the toothed plate 206 has a rack that meshes with the toothed disc. The rotating ring 401 can rotate under the drive of the tooth plate 206, thereby driving the first transmission rod 4031 and the second transmission rod 4032 to move. The first transmission rod 4031 simultaneously drives the first cutter 504 to move away from the second cutter 505, and the second transmission rod 4032 simultaneously drives the second cutter 505 to move away from the first cutter 504, thereby entering a cutting preparation state. During cutting, the above structure moves in opposite directions to complete the cutting action.

[0050] like Figure 1 , Figure 3 and Figure 4As shown, in this embodiment, the fixing seat includes a bracket 402, and a fixing ring 501 fixedly connected to the bracket 402, and the first rotating shaft 5031 and the second rotating shaft 5032 are respectively arranged at opposite ends of the bottom of the fixing ring 501, and the edge of the first cutter 504 has an axial hole matched with the first rotating shaft 5031, and the second cutter 505 has an axial hole matched with the second rotating shaft 5032. The first transmission rod 4031 is suitable for driving the first cutter 504 to rotate around the first rotating shaft 5031, and the second transmission rod 4032 is suitable for driving the second cutter 505 to rotate around the second rotating shaft 5032.

[0051] like Figure 1 , Figure 3 and Figure 4 As shown, in this embodiment, the bracket 402 includes two support columns and beams on the top of the support columns, the two support columns are arranged opposite to each other, the two beams extend in opposite directions, and the fixed ring 501 is fixedly arranged at the ends of the two beams. An escape space for accommodating the rotating ring 401 and the fixed ring 501 is formed between the two support columns to avoid interference with the rotation of the rotating ring 401.

[0052] In this embodiment, the fixing ring 501 is provided with clamping grooves 502 on the opposite side edges thereof, and the clamping grooves 502 are connected to the ends of the cross beam, so as to fix the fixing ring 501 .

[0053] like Figure 1 , Figure 3 and Figure 4 As shown, in this embodiment, the rotating ring 401 is located between two supporting columns, and the fixed ring 501 is located on the inner ring side of the rotating ring 401, so that the structure becomes compact and the overall size of the ring cutting assembly 4 is reduced.

[0054] In this embodiment, the rotating ring 401 and the fixed ring 501 are concentrically arranged, that is, the centers of the two are the same, so that the cutting center points of the first cutter 504 and the second cutter 505 are also the same as the centers of the rotating ring 401 and the fixed ring 501, so as to facilitate alignment.

[0055] like Figure 1 and Figure 2 As shown, in this embodiment, the reset component 204 is an elastic member, which can be a spring, and the elastic member can be sleeved on the push rod 201, and one end of the elastic member is fixedly connected to the push rod 201, and the other end is fixedly connected to the inner wall of the slideway. Then, when the push rod 201 moves toward the first end, the elastic member is compressed and contracted, so that the elastic member obtains elastic force, and when the elastic clamping member 202 leaves the clamping hole 102, the elastic member can drive the push rod 201 to move toward the second end through the elastic force.

[0056] like Figure 1 and Figure 2As shown, in this embodiment, the blades of the first cutter 504 and the second cutter 505 are arc-shaped and complementary, and the outer edges of the first cutter 504 and the second cutter 505 are combined to form a circle. The blades of the first cutter 504 and the second cutter 505 can be fitted together without a gap, which is conducive to cutting tissue. Of course, the blades of the first cutter 504 and the second cutter 505 can also be blades of other shapes, which can be selected according to actual conditions.

[0057] In this embodiment, a limiting groove is provided on the inner wall of the slideway near the second end, and the limiting groove is suitable for abutting and cooperating with the elastic clip, thereby limiting the position of the push rod 201 moving toward the second end and preventing the push rod 201 from leaving the slideway.

[0058] like Figure 1 and Figure 2 As shown, in this embodiment, a connecting rod 205 is provided between the push rod 201 and the tooth plate 206 , which extends the length of the tooth plate 206 , thereby ensuring that the tooth plate 206 can accurately cooperate with the toothed disc of the rotating ring 401 .

[0059] like Figure 1 and Figure 2 As shown, in this embodiment, a boss 203 is provided at the end of the push rod 201, which increases the cross-sectional size of the push rod 201 at the second end, which is beneficial for the operator to push the push rod 201 to move, and the size of the boss 203 can be larger than the diameter of the slide, thereby limiting the position of the push rod 201 moving toward the first end.

[0060] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A surgical spinal cord transection knife, characterized in that: include: A housing (1) having slideways penetrating two opposite ends of the housing (1); A support plate (3) is arranged at the first end of the housing (1), and an end surface of the support plate (3) and the slideway are staggered in their respective extension directions; A circular cutting assembly, comprising a fixing base mounted on the support plate (3), and a first cutting knife (504) and a second cutting knife (505) rotatably connected to the fixing base; A push rod (201) is movably arranged in the slideway, and two ends of the push rod (201) extend out of the first end and the second end of the shell (1) by a certain length respectively, and the portion of the push rod (201) extending out of the first end of the shell (1) is suitable for driving the first cutter (504) and the second cutter (505) to move in a direction away from or towards each other; An elastic clamp (202) is arranged on the push rod (201); a clamp hole (102) is arranged on the housing (1); and the elastic clamp (202) is suitable for clamping with the clamp hole (102); A reset assembly (204) is arranged between the slideway and the push rod (201) and is suitable for driving the push rod (201) to perform a reset movement.

2. The surgical spinal cord transection knife according to claim 1, characterized in that: The support plate (3) is provided with a rotating structure, and the rotating structure comprises: A rotating ring (401) is rotatably arranged on the support plate (3) and has a toothed disc on its outer edge; A first transmission rod (4031), one end of which is rotatably connected to the toothed disc, and the other end of which is rotatably connected to the edge of the first cutter (504); A second transmission rod (4032), one end of which is rotatably connected to the toothed disc, and the other end of which is rotatably connected to the edge of the second cutter (505); A toothed plate (206) is arranged at the end of the push rod (201) extending out of the first end of the housing (1), and the toothed plate (206) has a toothed rack meshing with the toothed disc.

3. The surgical spinal cord transection knife according to claim 2, characterized in that: The fixing seat comprises a bracket (402) and a fixing ring (501) fixedly connected to the bracket (402); a first rotating shaft (5031) and a second rotating shaft (5032) are respectively arranged at opposite ends of the bottom of the fixing ring (501); an edge of the first cutter (504) has an axial hole matched with the first rotating shaft (5031); and the second cutter (505) has an axial hole matched with the second rotating shaft (5032); the first transmission rod (4031) is suitable for driving the first cutter (504) to rotate around the first rotating shaft (5031); and the second transmission rod (4032) is suitable for driving the second cutter (505) to rotate around the second rotating shaft (5032).

4. The surgical spinal cord transection knife according to claim 3, characterized in that: The support (402) comprises two support columns and cross beams respectively disposed on the tops of the support columns, the two support columns are disposed opposite to each other, the two cross beams extend in opposite directions, and the fixing rings (501) are fixedly disposed at the ends of the two cross beams.

5. The surgical spinal cord transection knife according to claim 4, characterized in that: The rotating ring (401) is located between the two supporting columns, and the fixing ring (501) is located on the inner ring side of the rotating ring (401).

6. The surgical spinal cord transection knife according to any one of claims 1 to 5, characterized in that: The reset component (204) is an elastic member, one end of which is fixedly connected to the push rod (201), and the other end of which is fixedly connected to the inner wall of the slideway.

7. The surgical spinal cord transection knife according to any one of claims 1 to 5, characterized in that: The blades of the first cutter (504) and the second cutter (505) are arc-shaped and complementary, and the outer edges of the first cutter (504) and the second cutter (505) are combined to form a circle.

8. The surgical spinal cord transection knife according to claim 1, characterized in that: A limiting groove is provided at a position of the inner wall of the slideway close to the second end, and the limiting groove is suitable for abutting and cooperating with the elastic clamp (202).

9. The surgical spinal cord transection knife according to claim 1, characterized in that: A boss (203) is provided at the end of the push rod (201).

10. The surgical spinal cord transection knife according to claim 2, characterized in that: A connecting rod (205) is provided between the push rod (201) and the tooth plate (206).

Images