Adjustable minimally invasive surgery incision dilator
By using a hinged structure and a return torsion spring in a minimally invasive surgical incision spreader, combined with a detachable hook body and positioning mechanism, the problems in the existing technology of the large space occupied by the handle and the fixed length of the hook part are solved, achieving a more compact and Adaptable surgical incision expansion effect.
Patent Information
- Application Number
- CN202420499096.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-03-14
AI Technical Summary
The existing minimally invasive surgical incision stretcher adopts a scissor-like structure, and the handle occupies a large space, affecting the surgical operation, and the length of the hook is fixed, making it difficult to adapt to incisions of different wall thicknesses, resulting in poor opening of the incision. Insufficient sex.
An adjustable minimally invasive surgical incision spreader is designed, which uses a hinged structure and a return torsion spring to reduce the length of the entire spreader and increase its adaptability. By arranging detachable hook bodies on the first rod body and the second rod body, and using a positioning mechanism to adjust the included angle and support area, it can adapt to incisions with different wall thicknesses.
It achieves a more compact structural design, reduces the space occupied by surgical operations, and improves adaptability, allowing the spreader to better adapt to incisions with different wall thicknesses and improve the opening state of the incision.
Smart Images
Figure CN222367728U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an adjustable minimally invasive surgical incision expander. Background Art
[0002] In minimally invasive surgery, a spreader is used to open the incision to a certain size. For example, in the Chinese utility model patent with authorization announcement number CN217853101U, entitled "A scalp incision spreader suitable for DBS", a scalp incision spreader suitable for DBS is disclosed, including a symmetrically arranged first spreader arm and a second spreader arm, the first spreader arm and the second spreader arm are hinged by a hinge shaft to form a scissor-like structure; the first spreader arm includes an integrally connected first hand-held portion and a first spreader portion, and the second spreader arm includes an integrally connected second hand-held portion and a second spreader portion; the rear ends of the first spreader portion and the second spreader portion are hinged to the hinge shaft, and the front ends of the first spreader portion and the second spreader portion are formed with a first hook-shaped portion and a second hook-shaped portion arranged opposite to each other; an arc-shaped sawtooth bar is arranged on the inner side of the first hand-held portion, and a lock buckle is arranged on the outer side of the second hand-held portion, and the lock buckle is connected to the arc-shaped sawtooth bar by a tooth buckle.
[0003] Although the above-mentioned expanders can expand and fix the incision, they adopt a scissor-like structure and the handle occupies a large space, which will have a certain impact on the surgical operation. In addition, the hook length of the existing expanders of this type is generally fixed, and sometimes the hook is difficult to adapt to incisions with different wall thicknesses, and the expansion state of the incision is difficult to reach the optimal state. That is, the versatility of the existing expanders of this type needs to be further improved.
[0004] Based on the above issues, the applicant conducted research on the above issues and resulted in this case. Utility Model Content
[0005] The utility model aims to provide an adjustable minimally invasive surgical incision expander with a more compact structure and stronger adaptability.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] An adjustable minimally invasive surgical incision spreader includes a first rod body, a second rod body, a first hook body arranged on the first rod body, a second hook body arranged on the second rod body, and a positioning mechanism for realizing the positioning of the first hook body and the second hook body, wherein one end of the first rod body and one end of the second rod body are hinged together through a hinge shaft, and a reset torsion spring is sleeved on the hinge shaft, one arm of the reset torsion spring rests on the first rod body, and the other arm rests on the second rod body, and a first mounting hole and a second mounting hole are arranged at the other end of the first rod body along the length direction of the first rod body, and the first hook body can be detachably mounted in the first mounting hole or the second mounting hole, and a third mounting hole and a fourth mounting hole are arranged at the other end of the second rod body along the length direction of the second rod body, and the second hook body can be detachably mounted in the third mounting hole or the fourth mounting hole.
[0008] As a preferred embodiment of the present invention, the first rod body includes a first adjusting portion and a first supporting portion, the second rod body includes a second adjusting portion and a second supporting portion, the first adjusting portion is hinged to the second adjusting portion, the first hook body is arranged on the first supporting portion, and the second hook body is arranged on the second supporting portion.
[0009] As a preferred embodiment of the present invention, the first hook is locked on the first support portion by a first screw, and the second hook is locked on the second support portion by a second screw.
[0010] As a preferred embodiment of the present invention, a first making way platform is formed on the first supporting part, the second mounting hole is arranged in the first making way platform, a second making way platform is formed on the second supporting part, and the fourth mounting hole is arranged in the second making way platform.
[0011] As a preferred embodiment of the present invention, the depth of the first giving way platform is the same as the thickness of the first hook body, and the depth of the second giving way platform is the same as the thickness of the second hook body.
[0012] As a preferred embodiment of the present invention, a first receiving slot is provided on the first hook, and the first screw is located in the first receiving slot; a second receiving slot is provided on the second hook, and the second screw is located in the second receiving slot.
[0013] As a preferred embodiment of the present invention, the first hook and the second hook are both J-shaped.
[0014] As a preferred embodiment of the present invention, the length of the first rod is between 16 and 20 centimeters, and the length of the second rod is between 16 and 20 centimeters.
[0015] As a preferred embodiment of the present invention, the angle between the first rod body and the second rod body is 30° to 60°.
[0016] As a preferred embodiment of the utility model, the positioning mechanism includes a connecting strip, one end of the connecting strip is fixed to the first rod body, and the other end is a movable end, the connecting strip is provided with an arc groove, the arc groove is provided with a plurality of positioning teeth, and the plurality of positioning teeth are arranged along the length direction of the arc groove, a positioning rod is provided on the second rod body, the positioning rod can be slidably arranged in the arc groove, the second rod body is provided with a guide hole perpendicular to the second rod body, the positioning rod can be movably passed through the guide hole, a first limit block is provided at one end of the positioning rod, a compression spring is provided between the first limit block and the second rod body, a second limit block is provided at the other end of the positioning rod, the second limit block is provided with a clamping block cooperating with the positioning tooth, and the clamping block extends into the positioning tooth.
[0017] After adopting the technical solution of the utility model, one end of the first rod body is directly hinged to one end of the second rod body, which can reduce the length of the entire spreader and reduce the space occupied by the spreader. The first hook body of the utility model can be selectively installed in the first mounting hole or the second mounting hole, and the second hook body can be selectively installed in the third mounting hole or the fourth mounting hole, so that the support area can be adjusted to adapt to incisions with different wall thicknesses, thereby improving the adaptability of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a structural schematic diagram of the utility model.
[0019] Figure 2 This is another usage state diagram of the utility model.
[0020] Figure 3 It is a structural schematic diagram of the positioning rod of the utility model cooperating with the second rod body.
[0021] In the figure:
[0022] First rod body 10 First adjustment portion 11
[0023] First support part 12 First clearance platform 13
[0024] First mounting hole 14 Second mounting hole 15
[0025] Second rod body 20 Second adjustment portion 21
[0026] Second support part 22 Second clearance platform 23
[0027] Guide hole 24 Third mounting hole 25
[0028] Fourth mounting hole 26
[0029] Articulated shaft 30
[0030] First hook 41 First screw 42
[0031] Second hook 51 Second screw 52
[0032] Reset torsion spring 60 Connecting strip 70
[0033] Arc groove 71 Positioning tooth 72
[0034] Positioning rod 80 First limiting block 81
[0035] Second limit block 82 compression spring 83
[0036] Block 84 DETAILED DESCRIPTION
[0037] In order to better understand the technical solution of the present utility model, it is described in more detail below in conjunction with embodiments.
[0038] Reference Figures 1 to 3 The adjustable minimally invasive surgical incision expander comprises a first rod 10, a second rod 20, a first hook 41 arranged on the first rod 10, a second hook 51 arranged on the second rod 20, and a positioning mechanism for realizing the positioning of the first hook 41 and the second hook 51. When the first rod 10 and the second rod 20 are opened to a suitable angle, the positioning mechanism realizes the positioning of the angle between the first rod 10 and the second rod 20. One end of the first rod 10 and one end of the second rod 20 are hinged together through a hinge shaft 30. A reset torsion spring 60 is sleeved on the hinge shaft 30. One arm of the reset torsion spring 60 rests on the first rod 10, and the other arm rests on the second rod 20. When the angle between the first rod 10 and the second rod 20 decreases, the two arms of the reset torsion spring 60 approach each other, the reset spring is compressed, and the two arms exert a force on the first rod 10 and the second rod 20 so that the two have a tendency to open. A first mounting hole 14 and a second mounting hole 15 are provided at the other end of the first rod body 10, and the first mounting hole 14 and the second mounting hole 15 are arranged along the length direction of the first rod body 10. The first hook body 41 is detachably installed in the first mounting hole 14 or the second mounting hole 15. A third mounting hole 25 and a fourth mounting hole 26 are provided at the other end of the second rod body 20, and the third mounting hole 25 and the fourth mounting hole 26 are arranged along the length direction of the second rod body 20. The second hook body 51 is detachably installed in the third mounting hole 25 or the fourth mounting hole 26.
[0039] As a preferred embodiment of the present utility model, the first rod body includes a first adjusting portion 11 and a first supporting portion 12, the second rod body includes a second adjusting portion 21 and a second supporting portion 22, the first adjusting portion 11 is hinged to the second adjusting portion 21, the first supporting portion 12 and the second supporting portion 22 are generally in the shape of a straight plate, the first hook body 41 is arranged on the first supporting portion 12, the second hook body 51 is arranged on the second supporting portion 22, the first hook body 41 and the first supporting portion 12, the second hook body 51 and the second supporting portion 22 together constitute a supporting area for propping up the incision.
[0040] As a preferred embodiment of the present invention, the first hook 41 is locked on the first support portion 12 by a first screw 42, and the second hook 51 is locked on the second support portion 22 by a second screw 52. As a preferred embodiment of the present invention, the first hook 41 is provided with a first receiving groove seat, and the first screw 42 is located in the first receiving groove seat, and the second hook 51 is provided with a second receiving groove seat, and the second screw 52 is located in the second receiving groove seat, so as to prevent the first screw 42 and the second screw 52 from being too protruding and affecting the support of the first hook 41 and the second hook 51.
[0041] As a preferred embodiment of the present invention, a first clearance platform 13 is formed on the first support portion 12, the second mounting hole 15 is arranged in the first clearance platform 13, a second clearance platform 23 is formed on the second support portion 22, and the fourth mounting hole 26 is arranged in the second clearance platform 23. As a preferred embodiment of the present invention, the depth of the first clearance platform 13 is the same as the thickness of the first hook 41, and the depth of the second clearance platform 23 is the same as the thickness of the second hook 51. After the first hook 41 is installed on the first clearance platform 13, the first hook 41 forms a smooth transition with the first support portion 12, and after the second hook 51 is installed on the second clearance platform 23, the second hook 51 forms a smooth transition with the second support portion 22, thereby increasing the support area of the first hook 41 and the second hook 51.
[0042] As a preferred embodiment of the present invention, the first hook 41 and the second hook 51 are both J-shaped.
[0043] As a preferred embodiment of the present invention, the length of the first rod body 10 is between 16 and 20 centimeters, and the length of the second rod body 20 is between 16 and 20 centimeters. The overall size is small and the occupied space is small.
[0044] As a preferred embodiment of the present invention, the angle between the first rod body 10 and the second rod body 20 is 30° to 60°.
[0045] As a preferred embodiment of the present utility model, the positioning mechanism includes a connecting bar 70, one end of the connecting bar 70 is fixed on the first rod body 10, and the other end is a movable end. The connecting bar 70 is provided with an arc groove 71, and the arc groove 71 is provided with a plurality of positioning teeth 72. The plurality of positioning teeth 72 are arranged along the length direction of the arc groove 71. A positioning rod 80 is provided on the second rod body 20, and the positioning rod 80 is slidably set in the arc groove 71. The opening degree of the first rod body 10 and the second rod body 20 is adjusted by sliding the positioning rod 80 in the arc groove 71. The second rod body 20 is provided with a guide hole 24 perpendicular to the second rod body 20, and the positioning rod 80 can be movably inserted into the guide hole 24. The positioning rod 80 can move axially along the guide hole 24. A first limit block 81 is provided at one end of the positioning rod 80, and a compression spring 83 is provided between the first limit block 81 and the second rod body 20. The first limit block 81 can be, for example, a limit nut, which is sleeved on the positioning rod 80 in a threaded connection manner. By adjusting the position of the limit nut, the compression degree of the compression spring 83 can be adjusted. The other end of the positioning rod 80 is provided with a second limit block. The second limit block 82 is provided with a card block 84 that cooperates with the positioning tooth 72. The card block 84 extends along the axial direction of the positioning rod 80. Under the action of the compression spring 83, the card block 84 extends into the positioning tooth 72. When it is necessary to make the positioning rod 80 slide in the arc groove 71, the positioning rod 80 is pulled axially to make the card block 84 disengage from the positioning tooth 72. After the positioning rod 80 slides to a certain position, the positioning rod 80 is released. Under the action of the compression spring 83, the card block 84 is stuck in the positioning tooth 72, thereby realizing the positioning of the first rod body 10 and the second rod body 20. The positioning mechanism has the advantage of simple structure.
[0046] The protection scope of the present utility model is not limited to this embodiment, and any person making similar changes thereto shall be deemed to be within the protection scope of the present utility model.
Claims
1. An adjustable minimally invasive surgical incision expander, comprising a first rod, a second rod, a first hook disposed on the first rod, a second hook disposed on the second rod, and a positioning mechanism for positioning the first hook and the second hook, characterized in that: One end of the first rod body and one end of the second rod body are hinged together through a hinge shaft, and a return torsion spring is sleeved on the hinge shaft, one arm of the return torsion spring rests on the first rod body, and the other arm rests on the second rod body, and a first mounting hole and a second mounting hole are provided at the other end of the first rod body, and the first mounting hole and the second mounting hole are arranged along the length direction of the first rod body, and the first hook body can be detachably installed in the first mounting hole or the second mounting hole, and a third mounting hole and a fourth mounting hole are provided at the other end of the second rod body, and the third mounting hole and the fourth mounting hole are arranged along the length direction of the second rod body, and the second hook body can be detachably installed in the third mounting hole or the fourth mounting hole.
2. The adjustable minimally invasive surgical incision expander according to claim 1, characterized in that: The first rod body includes a first adjusting portion and a first supporting portion, the second rod body includes a second adjusting portion and a second supporting portion, the first adjusting portion is hinged to the second adjusting portion, the first hook body is arranged on the first supporting portion, and the second hook body is arranged on the second supporting portion.
3. The adjustable minimally invasive surgical incision expander according to claim 2, characterized in that: The first hook is locked on the first support portion by a first screw, and the second hook is locked on the second support portion by a second screw.
4. The adjustable minimally invasive surgical incision expander according to claim 3, characterized in that: A first making way platform is formed on the first supporting portion, and the second mounting hole is arranged in the first making way platform; a second making way platform is formed on the second supporting portion, and the fourth mounting hole is arranged in the second making way platform.
5. The adjustable minimally invasive surgical incision expander according to claim 4, characterized in that: The depth of the first giving way platform is the same as the thickness of the first hook body, and the depth of the second giving way platform is the same as the thickness of the second hook body.
6. The adjustable minimally invasive surgical incision expander according to claim 5, characterized in that: The first hook body is provided with a first receiving groove seat, and the first screw is located in the first receiving groove seat. The second hook body is provided with a second receiving groove seat, and the second screw is located in the second receiving groove seat.
7. The adjustable minimally invasive surgical incision expander according to claim 6, characterized in that: The first hook and the second hook are both J-shaped.
8. The adjustable minimally invasive surgical incision expander according to claim 7, characterized in that: The length of the first rod is between 16 and 20 centimeters, and the length of the second rod is between 16 and 20 centimeters.
9. The adjustable minimally invasive surgical incision expander according to claim 8, characterized in that: The included angle between the first rod body and the second rod body is 30° to 60°.
10. The adjustable minimally invasive surgical incision expander according to any one of claims 1 to 9, characterized in that: The positioning mechanism includes a connecting strip, one end of which is fixed to the first rod body, and the other end is a movable end. The connecting strip is provided with an arc groove, and the arc groove is provided with a plurality of positioning teeth, and the plurality of positioning teeth are arranged along the length direction of the arc groove. A positioning rod is provided on the second rod body, and the positioning rod can be slidably arranged in the arc groove. A guide hole perpendicular to the second rod body is provided on the second rod body, and the positioning rod can be movably inserted into the guide hole. A first limit block is provided at one end of the positioning rod, and a compression spring is provided between the first limit block and the second rod body. A second limit block is provided at the other end of the positioning rod, and a clamping block cooperating with the positioning tooth is provided on the second limit block, and the clamping block extends into the positioning tooth.