Arch-shaped automatic drag hook for open surgery

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to an arch-shaped automatic retractor for an open surgery, which is mainly used for retracting a surgical incision in the open surgery so as to expose a surgical area, and mainly comprises an elastic arch part, a first end and a second end which can be arranged in a mirror image manner, when the first end and the second end get close to each other, the elastic bow part deforms; the stop structure is arranged on the inner side of the elastic bow part, the stop structure has a joint state and a separation state, in the joint state, the stop structure allows the first end and the second end to get close to each other, and in the separation state, the stop structure allows the first end and the second end to get away from each other; and the at least two holding pieces are respectively connected to the first end and the second end and synchronously move along with the first end and the second end.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, and in particular relates to an arch-shaped automatic retractor for open surgery. Background Art

[0002] For emergency surgeries in gastrointestinal, hepatobiliary, and thoracic surgery, as well as routine surgeries in internal surgery, open surgery is still common. Where there is open surgery, there will be surgical retractors, which can be used to pull open the incision, thereby exposing the tissue in the surgical area. However, when using traditional surgical retractors, the surgical assistant often manually uses the retractors to pull open the surgical incision. However, due to the uneven force of manual traction, which is sometimes tight and sometimes loose, it affects the exposure of the surgical site, is not conducive to surgical operation, and is easy to cause fatigue to the surgeon, which is not conducive to preventing cross infection. Since the use of retractors is required, the operation often requires multiple surgeons to complete, which seriously affects the efficiency of the operation.

[0003] In view of the above problems, the utility model provides an arched automatic retractor for open surgery. Utility Model Content

[0004] In order to overcome the problems raised in the background technology, the present invention adopts the following technical solutions:

[0005] An open surgery arched automatic retractor, comprising:

[0006] an elastic bow portion having a first end and a second end that can be arranged in a mirror image with each other, wherein the elastic bow portion is elastic so as to always cause the first end and the second end to move away from each other, and when the first end and the second end approach each other, the elastic bow portion is deformed;

[0007] a stop structure disposed on an inner side of the elastic bow portion, the stop structure having an engaged state and a disengaged state, wherein in the engaged state, the stop structure allows the first end and the second end to approach each other, and in the disengaged state, the stop structure allows the first end and the second end to move away from each other;

[0008] At least two holding members are respectively connected to the first end and the second end, and move synchronously with the first end and the second end.

[0009] In some embodiments of the present application, the stopping structure includes:

[0010] a first stop arm fixedly disposed on an inner side of the elastic bow portion, wherein a plurality of first teeth are provided on one side of the first stop arm;

[0011] a second stop arm fixedly disposed on an inner side of the elastic bow portion and opposite to the first stop arm, the second stop arm being located above the first stop arm in a thickness direction of the first stop arm, wherein a plurality of second teeth meshing with the plurality of first teeth are provided on one side of the second stop arm;

[0012] When the first end and the second end are brought closer together in the engaged state, the first stop arm and the second stop arm move closer to each other, and a plurality of the first teeth are sequentially switched between a plurality of the second teeth.

[0013] Furthermore, the first tooth has a first vertical surface and a first inclined surface, and the second tooth has a second vertical surface and a second inclined surface. In the engaged state, the first inclined surface and the second inclined surface are in contact with each other, and the first vertical surface and the second vertical surface are in contact with each other under the action of the elastic bow.

[0014] Furthermore, the elastic bow portion is made of one of stainless steel, titanium alloy and aluminum alloy.

[0015] Furthermore, the elastic bow portion is made of stainless steel.

[0016] Furthermore, the first stop arm and the second stop arm are made of the same material as the elastic bow portion.

[0017] Furthermore, the elastic bow portion includes: a first straight line segment, a second straight line segment and an arc segment, wherein the first straight line segment and the second straight line segment are arranged at both ends of the arc segment, and the first straight line segment and the second straight line segment are parallel to each other, wherein the first end is one end of the first straight line segment, and the second end is one end of the second straight line segment.

[0018] Furthermore, the two holding members are arranged in mirror image with each other.

[0019] Furthermore, the handle includes:

[0020] a base plate, the base plate being rotatably connected to the first end;

[0021] A first baffle and a second baffle are disposed on the same side of the substrate, and there is a distance between the first baffle and the second baffle, wherein the first baffle and the second baffle are parallel to each other.

[0022] Furthermore, it also includes: a bolt and a nut, wherein the first end has a first hole, the base plate has a second hole, the bolt passes through the first hole and the second hole from the outside to the inside of the elastic bow, and the nut is located on the inside of the elastic bow and is threadedly engaged with the bolt.

[0023] Beneficial effects of the utility model:

[0024] 1. By setting up an elastic bow and two holding pieces, when in use, the two holding pieces respectively hold the tissue at the edge of the patient's surgical incision, and the elastic potential energy of the elastic bow allows the surgical incision to always remain in a retracted state during the operation, so that the surgical site is always exposed, thereby saving manpower.

[0025] 2. By setting a stop structure, after the first end and the second end of the elastic bow are brought close to each other according to the size of the patient's surgical incision, the first end and the second end will not be far away from each other, and the patient's surgical incision can be prevented from being enlarged during use, thereby avoiding damage to the patient's surgical incision. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the elastic bow structure of the utility model;

[0028] Figure 3 This is a schematic diagram of the stop structure of the utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the first and second teeth of the utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the handle of the utility model;

[0031] Figure 6 This is a schematic diagram of the connection structure between the holding member and the first end of the utility model;

[0032] In the figure, 1. elastic bow portion; 11. first straight segment; 111. first end; 12. second straight segment; 121. second end; 13. arc segment; 2. stopping structure; 21. first stopping arm; 211. first tooth; 2111. first vertical surface; 2112. first inclined surface; 22. second stopping arm; 221. second tooth; 2211. second vertical surface; 2212. second inclined surface; 3. holding member; 31. substrate; 32. first baffle; 33. second baffle; 4. bolt; 41. nut. DETAILED DESCRIPTION

[0033] The following is a clear and complete description of the technical solutions in the embodiments of the present invention through specific embodiments. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Those skilled in the art can easily understand other advantages and functions of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation methods. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] Figure 1 —3 shows the main technical content of this embodiment. This specific embodiment provides an open surgery arched automatic retractor, which includes:

[0035] The elastic bow portion 1 has a first end 111 and a second end 121 that can be arranged in a mirror image with each other. The elastic bow portion 1 has elasticity to always cause the first end 111 and the second end 121 to move away from each other. When the first end 111 and the second end 121 approach each other, the elastic bow portion 1 is deformed.

[0036] A stop structure 2 is disposed inside the elastic bow portion 1. The stop structure 2 has an engaged state and a disengaged state. In the engaged state, the stop structure 2 allows the first end 111 and the second end 121 to approach each other. In the disengaged state, the stop structure 2 allows the first end 111 and the second end 121 to move away from each other.

[0037] At least two holding members 3 are respectively connected to the first end 111 and the second end 121 , and move synchronously with the first end 111 and the second end 121 .

[0038] During use, according to the size of the surgical incision of the patient, the first end 111 and the second end 121 of the elastic bow 1 are moved closer or farther away, and then the two holding members 3 are placed in the surgical incision of the patient. The two holding members 3 correspond to the two sides of the surgical incision of the patient, respectively, so as to hold the edge tissue of the surgical incision of the patient. At this time, the elastic potential energy of the elastic bow 1 is used to keep the surgical incision in a retracted state at all times during the operation, so that the surgical site is always exposed, thereby saving manpower. The stopping structure 2 in the engaged state prevents the first end 111 and the second end 121 from moving away from each other, thereby avoiding damage to the surgical incision of the patient between the first end 111 and the second end 121.

[0039] refer to Figure 1—3. In the present embodiment, the stop structure 2 includes: a first stop arm 21 and a second stop arm 22; the first stop arm 21 is fixedly arranged on the inner side of the elastic bow portion 1, wherein a plurality of first teeth 211 are provided on one side of the first stop arm 21; the second stop arm 22 is fixedly arranged on the inner side of the elastic bow portion 1, and is opposite to the first stop arm 21. In the thickness direction of the first stop arm 21, the second stop arm 22 is located above the first stop arm 21, wherein a plurality of second teeth 221 meshing with the plurality of first teeth 211 are provided on one side of the second stop arm 22; wherein, when the first end 111 and the second end 121 are brought close to each other in the engaged state, the first stop arm 21 and the second stop arm 22 are brought close to each other, and the plurality of first teeth 211 are sequentially engaged with the plurality of second teeth 221; during use, when the first end 111 and the second end 121 of the elastic bow portion 1 need to be close to each other, force is first applied to the first end 111 and the second end 121 of the elastic bow portion 1. At this time, the elastic bow portion 1 is deformed, and the first stop arm 21 and the second stop arm 22 are close to each other. At the same time, in this process, a plurality of first teeth 211 are always switched between a plurality of second teeth 221 in turn. After the distance between the first end 111 and the second end 121 is adjusted to an applicable width, the first end 111 and the second end 121 will not be far away from each other through the plurality of first teeth 211 and the plurality of second teeth 221, thereby achieving the effect of adjusting the distance between the first end 111 and the second end 121, so that the instrument can be applied to surgical incisions of different sizes.

[0040] refer to Figure 1—4. Specifically, the first tooth 211 has a first vertical surface 2111 and a first inclined surface 2112, and the second tooth 221 has a second vertical surface 2211 and a second inclined surface 2212. In the engaged state, the first inclined surface 2112 and the second inclined surface 2212 are in contact with each other, and the first vertical surface 2111 and the second vertical surface 2211 are in abutment with each other under the action of the elastic bow portion 1; further, in the engaged state, one first tooth 211 is located between two second teeth 221, wherein the first inclined surface 2112 of the first tooth 211 is in contact with the second inclined surface 2212 of one second tooth 221, and the first vertical surface 2111 of the first tooth 211 is in abutment with the second vertical surface 2211 of another second tooth 221 under the action of the elastic bow portion 1, thereby making the first end 111 and the second end 121 in the engaged state. They can only approach each other, wherein when the first stop arm 21 and the second stop arm 22 approach each other, the first inclined surface 2112 and the second inclined surface 2212 slide against each other, and at this time the first stop arm 21 and the second stop arm 22 move away from each other in the height direction of the first stop arm 21, so that the first tooth 211 comes out between two adjacent second teeth 221 and enters between another pair of adjacent second teeth 221, thereby realizing a step-by-step adjustment of the distance between the first end 111 and the second end 121, and after stopping the first end 111 and the second end 121 from approaching each other, the first vertical surface 2111 of the first tooth 211 abuts against the second vertical surface 2211 of the second tooth 221 under the elastic potential energy of the elastic bow portion 1, and at this time, the first tooth 211 is fixed, so that the distance between the first end 111 and the second end 121 remains unchanged.

[0041] refer to Figure 1 —2. In this embodiment, the elastic bow portion 1 is made of one of stainless steel, titanium alloy, and aluminum alloy. More specifically, the elastic bow portion 1 is in the shape of a plate as a whole. After being made of the above material, when force is applied to the first end 111 and the second end 121, it can bend and generate elastic potential energy, so that the distance between the first end 111 and the second end 121 can be maintained stationary under the action of the stop structure 2; more specifically, the elastic bow portion 1 includes: a first straight segment 11, a second straight segment 12 and an arc segment 13, wherein the first straight segment 11 and the second straight segment 12 are arranged at both ends of the arc segment, and the first straight segment 11 and the second straight segment 12 are parallel to each other, wherein the first end 111 is one end of the first straight segment 11, and the second end 121 is one end of the second straight segment 12. When the first end 111 and the second end 121 approach each other, the arc segment 13 is deformed and the curvature of the arc portion increases.

[0042] More specifically, the first stop arm 21 and the second stop arm 22 are made of the same material as the elastic bow portion 1. When the distance between the first end 111 and the second end 121 needs to be increased, force can be applied to either the first stop arm 21 or the second stop arm 22 to stagger the two, thereby disengaging the first tooth 211 from the second tooth 221. At this time, under the elastic potential energy of the elastic bow portion 1, the first end 111 and the second end 121 can be moved away from each other, thereby achieving the effect of increasing the distance between the first end 111 and the second end 121.

[0043] refer to Figure 2 and Figure 5 -6. In the present embodiment, the two holding members 3 are rotatably connected to the first end 111 and the second end 121 respectively; specifically, they also include: a bolt 4 and a nut 41, wherein the first end 111 has a first hole, the holding member 3 has a second hole, the bolt 4 passes through the first hole and the second hole from the outside of the elastic bow portion 1 to the inside, and the nut 41 is located on the inside of the elastic bow portion 1 and is threadedly engaged with the bolt 4; when in use, the bolt 4 is passed through the first hole and the second hole from the outside of the elastic bow portion 1 to the inside, and then the nut 41 is screwed onto the bolt 4. At this time, one end of the bolt 4 rests on the outer wall of the holding member 3, and the nut 41 rests on the inner side of the first end 111, so that the holding member 3 is fixed at the first end 111. Similarly, the second end 121 also has a first hole. When in use, the other holding member 3 is also fixed to the second end 121 by the bolt 4 and the nut 41.

[0044] In addition, after loosening the nut 41 , the spatial position of the holding member 3 can be adjusted so that the holding member 3 can hold more human tissue.

[0045] More specifically, the holding member 3 includes a base plate 31, a first baffle 32 and a second baffle 33. The first hole passes through the base plate 31. The first baffle 32 and the second baffle 33 are arranged on the same side of the base plate 31, and there is a distance between the first baffle 32 and the second baffle 33, wherein the first baffle 32 and the second baffle 33 are parallel. When in use, the edge of the patient's surgical incision is placed between the first baffle 32 and the second baffle 33. At this time, the first baffle 32 is located outside the patient's body and the second baffle 33 is located inside the patient's body, so as to hold the tissue at the edge of the surgical incision, thereby avoiding the tissue at the edge of the surgical incision from falling out during the operation, thereby avoiding affecting the exposure of the surgical site, and thus reducing the surgical risk.

[0046] The use method of this utility model:

[0047] 1. First, according to the size of the patient's surgical incision, the first end and the second end of the elastic bow are moved closer or farther away. After the distance between the first end and the second end is adjusted, the stop structure maintains the distance between the first end and the second end;

[0048] 2. Then, according to the position of the device during surgery, the two handles are adjusted so that after the patient's surgical incision is retracted, the elastic arch will not affect the operating space of the surgical area;

[0049] 3. Place the holding piece into the patient's surgical incision and place the edge tissue of the patient's surgical incision between the first baffle and the second baffle. At this time, the first baffle is located outside the patient's body and the second baffle is located inside the patient's body, thereby holding the tissue at the edge of the surgical incision.

[0050] The above embodiments are only for understanding the present invention. It should be noted that, for those skilled in the art, several improvements can be made to the present invention without departing from the principles of the present invention, and these improvements will also fall within the scope of protection of the claims of the present invention.

Claims

1. An open surgery bow-shaped automatic retractor, characterized in that: It includes: an elastic bow portion having a first end and a second end that can be arranged in a mirror image with each other, wherein the elastic bow portion is elastic so as to always cause the first end and the second end to move away from each other, and when the first end and the second end approach each other, the elastic bow portion is deformed; a stop structure disposed on an inner side of the elastic bow portion, the stop structure having an engaged state and a disengaged state, wherein in the engaged state, the stop structure allows the first end and the second end to approach each other, and in the disengaged state, the stop structure allows the first end and the second end to move away from each other; At least two holding members are respectively connected to the first end and the second end, and move synchronously with the first end and the second end.

2. The open surgery arched automatic retractor according to claim 1, characterized in that: The stopping structure comprises: a first stop arm fixedly disposed on an inner side of the elastic bow portion, wherein a plurality of first teeth are provided on one side of the first stop arm; a second stop arm fixedly disposed on an inner side of the elastic bow portion and opposite to the first stop arm, the second stop arm being located above the first stop arm in a thickness direction of the first stop arm, wherein a plurality of second teeth meshing with the plurality of first teeth are provided on one side of the second stop arm; When the first end and the second end are brought closer together in the engaged state, the first stop arm and the second stop arm move closer to each other, and a plurality of the first teeth are sequentially switched between a plurality of the second teeth.

3. The open surgery arched automatic retractor according to claim 2, characterized in that: The first tooth has a first vertical surface and a first inclined surface, and the second tooth has a second vertical surface and a second inclined surface. In the engaged state, the first inclined surface and the second inclined surface are in contact with each other, and the first vertical surface and the second vertical surface are in contact with each other under the action of the elastic bow.

4. The open surgery arched automatic retractor according to any one of claims 2 to 3, characterized in that: The elastic bow portion is made of one of stainless steel, titanium alloy and aluminum alloy.

5. The open surgery arched automatic retractor according to claim 4, characterized in that: The elastic bow portion is made of stainless steel.

6. The open surgery arched automatic retractor according to claim 5, characterized in that: The first stop arm and the second stop arm are made of the same material as the elastic bow portion.

7. The open surgery arched automatic retractor according to claim 1, characterized in that: The elastic bow portion includes: a first straight line segment, a second straight line segment and an arc segment, wherein the first straight line segment and the second straight line segment are arranged at both ends of the arc segment, and the first straight line segment and the second straight line segment are parallel to each other, wherein the first end is one end of the first straight line segment, and the second end is one end of the second straight line segment.

8. The open surgery arched automatic retractor according to claim 1, characterized in that: The two handles are arranged in mirror image to each other.

9. The open surgery arched automatic retractor according to claim 8, characterized in that: The handle comprises: a base plate, the base plate being rotatably connected to the first end; A first baffle and a second baffle are disposed on the same side of the substrate, and there is a distance between the first baffle and the second baffle, wherein the first baffle and the second baffle are parallel to each other.

10. The open surgery arched automatic retractor according to claim 9, characterized in that: Also includes: A bolt and a nut, wherein the first end has a first hole, the base plate has a second hole, the bolt passes through the first hole and the second hole from the outside to the inside of the elastic bow portion, and the nut is located on the inside of the elastic bow portion and is threadedly engaged with the bolt.

Images