Opening device for experimental animal operation

Abstract

The utility model relates to the field of surgical instruments, in particular to a surgical distraction device for experimental animals. The utility model relates to an experimental animal operation distraction device, which comprises a main board, a plurality of supporting rods and a plurality of supporting rods, a first connecting seat is arranged on the surface of the main plate and is provided with a first screw hole penetrating through the front side and the rear side; the second connecting seat is positioned above the main plate; the main screw rod is in threaded connection with the first screw hole; expansion arms are respectively arranged on two sides of the second connecting seat; push rods are respectively arranged at two ends of the expansion arm; the number of the third connecting seats is two, and the two third connecting seats are movably mounted at the other ends of the two expansion arms; each third connecting seat is provided with a first clamping plate which is movably connected, and the first clamping plate is provided with a second clamping plate which is fixedly connected or detachably connected; the sliding blocks are installed in the four sliding grooves in a sliding mode. Each sliding block is provided with a fixing sleeve.

Description

Technical Field

[0001] The utility model relates to the field of surgical instruments, in particular to a distraction device for experimental animal surgery. Background Art

[0002] The experimental center is a very important part of scientific research institutes and hospitals. It is mainly used for clinical diagnosis, teaching and scientific research; verifying theories or hypotheses, exploring biological phenomena, comparing the effects under experimental conditions, discovering new scientific facts through experimental operations, developing new experimental techniques or methods, etc. All of these need to be done in the laboratory.

[0003] Rodents are commonly used experimental animals in laboratories, such as mice and rats (including SD rats, C57 mice, and BALB / c mice). Many disease studies require the use of surgical models in the laboratory to study physiological and pathological mechanisms, or the use of surgical disease models to discover new treatments or evaluate efficacy. The purpose of rodent experiments includes the establishment of disease models through surgery, which has positive significance in scientific research.

[0004] There are many surgeries on mice and rats, such as abdominal (intraperitoneal, abdominal wall) surgery, liver surgery (liver ischemia-reperfusion injury model), intestinal surgery (intestinal obstruction model, sepsis model), uterine surgery, abdominal wall surgery (rat / mouse abdominal wall endometriosis autologous transplantation model, abdominal wall defect repair surgery), and thoracic (cardiac ischemia-reperfusion injury model, acute myocardial infarction-induced chronic heart failure model, aortic arch stenosis model), tumor orthotopic transplantation model and other surgical operations; all of the above abdominal and thoracic surgical operations are conducted on mice and rats; although there are many surgical products at present, in terms of experimental animal surgery, there are currently few surgical instruments and operating tables for rodents, and some aspects are blank; this has caused at least the following problems:

[0005] 1. Surgery with mice or rats as experimental subjects usually requires cutting open the chest and / or abdomen of the mice or rats, and stretching the incision to expose the surgical site. At the same time, the incision needs to be pulled and fixed during the intra-abdominal surgery. Two people are required to cooperate in the operation, one person pulls the abdominal wall and skin, and the other person performs the operation, which has high labor costs;

[0006] 2. For abdominal wall surgeries, such as the autologous transplantation model of endometriosis in mice and rats, it is necessary to perform autologous endometrial transplantation on the abdominal wall, so the incised abdominal wall needs to be everted; this is currently inconvenient, time-consuming and laborious;

[0007] 3. Due to the small size of rats and mice, the space available for operation is small, and the operation field exposure is poor when two people cooperate to operate. The operation of some organs and tissues is inconvenient, and the operation process is inconvenient and inefficient.

[0008] 4. In laboratories, operations on rodents may cause the experimental animals to suffer from hypothermia during surgery, or it may be difficult to protect tissues during surgery. Utility Model Content

[0009] The utility model aims to at least solve the problem that in current animal experiments, two people are required to cooperate in the operation, one person assists in expanding and pulling the abdomen, and the other person performs the operation, resulting in high labor costs and small surgical fields.

[0010] In order to solve the above technical problems, the utility model of the experimental animal surgery distraction device comprises:

[0011] A main board, the surface of which has four slide grooves; the surface of the main board has a first connection seat, and the first connection seat has a first screw hole that runs through the front and rear sides;

[0012] A second connecting seat, the second connecting seat is located above the main board;

[0013] A main screw, the main screw being threadedly connected to the first screw hole, and one end of the main screw being movably connected to the second connecting seat;

[0014] The second connecting seat is provided with expansion arms on both sides, and one end of each expansion arm is movably connected to the second connecting seat; and the two ends of the expansion arms are provided with push rods;

[0015] One end of the push rod is movably connected to the second connecting seat, and the other end of the push rod is movably connected to the expansion arm;

[0016] A third connecting seat, which is two in number, and the two third connecting seats are movably mounted on the other ends of the two expansion arms;

[0017] Each of the third connecting seats has a first clamping plate that is movably connected, and the first clamping plate has a second clamping plate that is fixedly connected or detachably connected;

[0018] The sliders are four in number, and the four sliders are slidably installed in the four slide grooves; each of the sliders is respectively installed with a fixing sleeve.

[0019] As a preferred embodiment of the experimental animal surgical distraction device of the utility model, the surface of the main board has a fixedly connected lifting guide column, and the lifting guide column is at a vertical angle;

[0020] It comprises a lifting plate, the lifting plate has a lifting guide hole; the lifting guide column is slidably connected with the lifting guide hole; the first connecting seat is fixedly installed above the lifting plate;

[0021] The side surface of the lifting plate has a second screw hole connected to the lifting guide hole;

[0022] A second fastener is included, and the second fastener is threadedly connected in the second screw hole.

[0023] As a preferred embodiment of the experimental animal surgery distraction device of the utility model, the bottom of the main board has a placement groove.

[0024] As a preferred embodiment of the experimental animal surgery distraction device of the utility model, the end of the expansion arm connected to the third connecting seat has a fixedly connected connecting shaft;

[0025] The third connecting seat has an axial hole; the connecting shaft is movably installed in the axial hole; the side surface of the third connecting seat has a third screw hole connected to the axial hole;

[0026] A third fastener is included, and the third fastener is threadedly connected in the third screw hole.

[0027] As a preferred embodiment of the experimental animal surgical distraction device of the utility model, the third connecting seat has a positioning hole, and the positioning hole and the second screw hole are at an intersecting angle;

[0028] The first clamping plate has a fourth screw hole, and the fourth screw hole and the positioning hole are located on the same axis;

[0029] A fourth fastener is included, and the fourth fastener passes through the positioning hole and is threadedly connected with the fourth screw hole.

[0030] As a preferred embodiment of the experimental animal surgical distraction device of the utility model, one side of the fixing sleeve is movably connected to the slider; the other side of the fixing sleeve and the slider has a fifth screw hole on the same axis;

[0031] A fifth fastener is included, and the fifth fastener is threadedly connected to the fifth screw hole.

[0032] As a preferred embodiment of the experimental animal surgery distraction device of the utility model, the inner surfaces of the first splint and the second splint are respectively provided with fixedly connected silicone pads.

[0033] As a preferred embodiment of the experimental animal surgical distraction device of the utility model, the other end of the main screw has a fixedly connected knob.

[0034] Beneficial Effects

[0035] The utility model solves the above existing problems and other existing problems not mentioned above and accordingly brings at least the following innovative advantages:

[0036] The utility model experimental animal surgery dilating device, when in use, the limbs of rats and mice are fixed by four sliders and fixing sleeves respectively. After the abdomen of rats and mice is cut open, the abdominal wall of rats and mice can be clamped and dilated by two first clamps and second clamps. The fixation of rats and mice is achieved, and the needs of different surgeries are met, the number of experimental personnel is reduced, and the experimental efficiency is improved. The problem that the incision needs to be pulled and fixed during the current intra-abdominal surgery, which requires two people to cooperate in the operation, is solved. And after dilating, the surgical field can be better exposed, further improving the convenience of operation.

[0037] The utility model provides an experimental animal surgical distraction device, which realizes the lifting and lowering of the first connecting seat through the cooperation of the lifting guide column and the lifting plate, so that the height of the first connecting seat can be adjusted according to the body size of the experimental animal.

[0038] The utility model provides a placement slot for the experimental animal surgical distraction device, so that during use, a heating pad can be installed in the placement slot to solve the problem of low body temperature during the experimental animal surgery; an ice bag or ice box can also be placed in the placement slot to facilitate tissue protection during surgical sampling and prevent degradation of RNA and protein in the experimental tissue.

[0039] The utility model relates to an experimental animal surgical distraction device. Since the first splint and the second splint are installed on the third connecting seat, the third connecting seat has a rotation function, so that when the first splint and the second splint clamp the abdominal wall of the animal, the incised abdominal wall can be turned over (everted), thereby solving the problem that it is inconvenient to evert the abdominal wall during current surgical operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a three-dimensional diagram of the utility model;

[0041] Figure 2 A three-dimensional diagram of the utility model from the back side;

[0042] Figure 3 A three-dimensional diagram of the present invention from the bottom perspective;

[0043] Figure 4 It is a partial exploded view of the utility model;

[0044] Figure 5 for Figure 4 A magnified image of area A;

[0045] Figure 6 for Figure 5 Exploded view of the middle C area;

[0046] Figure 7 for Figure 4 Exploded view of area B in the middle;

[0047] Figure 8 It is a three-dimensional enlarged view of the first connecting seat of the utility model;

[0048] Fig. 9 It is a three-dimensional enlarged view of the lifting plate of the utility model.

[0049] In the figure: 1. main board, 2. slide groove, 3. first connecting seat, 4. first screw hole, 5. second connecting seat, 6. main screw, 7. expansion arm, 8. push rod, 9. third connecting seat, 10. first clamping plate, 11. second clamping plate, 12. slider, 13. fixing sleeve, 14. lifting guide column, 15. lifting plate, 16. lifting guide hole, 17. second screw hole, 18. second fastener, 19. placement groove, 20. connecting shaft, 21. shaft hole, 22. third screw hole, 23. third fastener, 24. positioning hole, 25. fourth screw hole, 26. fourth fastener, 27. fifth screw hole, 28. fifth fastener, 29. knob. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the technical solution of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present disclosure.

[0051] The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only part of the embodiments of the present disclosure, but not all of the embodiments.

[0052] Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present disclosure.

[0053] As attached Figures 1 to 9 As shown, the experimental animal surgery distraction device of the utility model comprises a main board 1, and the surface of the main board 1 has four slide grooves 2; Figure 4 The four slide grooves 2 are radially distributed; the surface of the main board 1 has a first connecting seat 3, Figure 8 It is shown that the first connection seat 3 has a first screw hole 4 that passes through the front and rear sides; the axis of the first screw hole 4 is at a horizontal angle with the main board 1;

[0054] The second connecting seat 5, Figure 1 It is shown that the second connection base 5 is located above the main board 1;

[0055] Main screw 6, Figure 5It is shown that the main screw rod 6 is threadedly connected to the first screw hole 4, and one end of the main screw rod 6 is movably connected to the second connecting seat 5;

[0056] The second connection seat 5 has expansion arms 7 on both sides, and one end of each expansion arm 7 is movably connected to the second connection seat 5; that is, Figure 5 It is shown that the two ends of the second connecting seat 5 are movably connected to one end of an expansion arm 7; the two ends of the expansion arm 7 are respectively provided with a push rod 8;

[0057] One end of the push rod 8 is movably connected to the second connecting seat 5, and the other end of the push rod 8 is movably connected to the expansion arm 7; Figure 5 It is shown that the push rods 8 on both sides of the second connecting seat 5 are movably connected to the second connecting seat 5 at one end and movably connected to the middle part of the expansion arm 7 on the same side at the other end;

[0058] The third connecting seat 9, Figure 1 , Figure 2 , Figure 4 and Figure 5 It is shown that there are two third connecting seats 9, and the two third connecting seats 9 are movably installed at the other ends of the two expansion arms 7; that is, Figure 5 As shown, a third connecting seat 9 is movably mounted on the other end of each expansion arm 7; Figure 5 The effect diagram showing the installation of the third connecting seat 9 on the expansion arm 7 is shown. Figure 6 The exploded view of the third connecting seat 9 and the expansion arm 7 is shown;

[0059] like Figure 5 As shown, each of the third connecting seats 9 has a first clamping plate 10 that is movably connected. Figure 6 It is shown that each of the first clamping plates 10 has a second clamping plate 11 that is fixedly connected or detachably connected;

[0060] Slider 12, see Figure 1 , Figure 2 And Section 4, there are four sliders 12, and the four sliders 12 are slidably installed in the four slide grooves 2; each of the sliders 12 is respectively installed with a fixing sleeve 13.

[0061] Furthermore, the rat is placed on the surface of the main board 1, and the four limbs of the rat are fixed by four sliders 12 and fixing sleeves 13 respectively. When the abdomen of the rat is cut open, the abdominal wall of the rat can be clamped and opened by two first clamps 10 and second clamps 11; the rat is fixed, and the needs of different surgeries are met, the number of experimental personnel is reduced, and the experimental efficiency is improved. The problem that the incision needs to be pulled and fixed during the current intra-abdominal surgery, and the operation requires two people to cooperate, is solved. And after opening, the surgical field can be better exposed, further improving the convenience of operation.

[0062] For further information, see Figure 1 , Figure 2 and Figure 4 The surface of the main board 1 has a fixedly connected lifting guide column 14, and the lifting guide column 14 is at a vertical angle;

[0063] comprising a lifting plate 15, Figure 4 and Fig. 9 It is shown that the lifting plate 15 has a lifting guide hole 16; the lifting guide column 14 is slidably connected with the lifting guide hole 16; Figure 1 and Figure 2 The effect diagram of the lifting plate 15 being installed on the surface of the main board 1 is shown, wherein the lifting guide column 14 is located in the lifting guide hole 16; wherein the first connecting seat 3 is fixedly installed above the lifting plate 15;

[0064] Fig. 9 It is shown that the side of the lifting plate 15 has a second screw hole 17 connected to the lifting guide hole 16;

[0065] The second fastener 18 is threadedly connected to the second screw hole 17. Figure 2 The second fastener 18 is threadedly connected to the second screw hole 17. The second fastener 18 can be moved leftward or rightward in the second screw hole 17 by rotating the second fastener 18 clockwise or counterclockwise. When moving leftward, the end of the second fastener 18 can abut against the lifting guide column 14. The lifting guide column 14 and the lifting plate 15 cooperate to lift the first connection seat 3, so that the height of the first connection seat 3 can be adjusted according to the size of the experimental animal.

[0066] For further information, see Figure 3 The bottom of the main board 1 has a placement slot 19. By setting the placement slot 19, a heating pad can be installed in the placement slot 19 during use to heat the main board 1 and solve the problem of hypothermia during experimental animal surgery. An ice bag or ice box can also be placed in the placement slot 19 to cool the main board 1, which is convenient for tissue protection during surgical sampling and prevents degradation of RNA and protein in experimental tissues.

[0067] For further information, see Figure 5 and Figure 6 The end of the expansion arm 7 connected to the third connection seat 9 has a fixedly connected connection shaft 20;

[0068] The third connecting seat 9 has an axial hole 21; the connecting shaft 20 is movably mounted in the axial hole 21; wherein Figure 5 The effect of the third connecting seat 9 being installed on the connecting shaft 20 is shown. Figure 6 The disassembly effect of the third connecting seat 9 and the connecting shaft 20 is shown; Figure 6 As shown, the side surface of the third connecting seat 9 has a third screw hole 22 connected to the shaft hole 21;

[0069] comprising a third fastener 23, Figure 5 The third fastener 23 is shown to be threadedly connected to the third screw hole 22. The third fastener 23 is threadedly connected to the third screw hole 22. The third fastener 23 can be moved forward or backward in the third screw hole 22 by rotating the third fastener 23 clockwise or counterclockwise. When the end of the third fastener 23 abuts the connecting shaft 20, the third connecting seat 9 is positioned. When the end of the third fastener 23 does not abut the connecting shaft 20, the third connecting seat 9 can rotate with the connecting shaft 20 as the axis to adjust the angle of the third connecting seat 9. Since the first splint 10 and the second splint 11 are installed on the third connecting seat 9, the rotation of the third connecting seat 9 can realize the flipping (eversion) operation of the cut abdominal wall when the first splint 10 and the second splint 11 clamp the abdominal wall of the animal, solving the problem that the current surgical operation on the abdominal wall is inconvenient for eversion.

[0070] For further information, see Figure 5 and Figure 6 , the third connecting seat 9 has a positioning hole 24, and the positioning hole 24 and the second screw hole 17 are at an intersecting angle;

[0071] like Figure 6 As shown, the first clamping plate 10 has a fourth screw hole 25. When installed, the fourth screw hole 25 and the positioning hole 24 are on the same axis;

[0072] It includes a fourth fastener 26, which passes through the positioning hole 24 and is threadedly connected to the fourth screw hole 25; when the fourth fastener 26 is loosened from the fourth screw hole 25, the first clamp 10 can rotate around the fourth fastener 26 as the axis, and when the fourth fastener 26 and the fourth screw hole 25 are tightened, the first clamp 10 will tightly abut the bottom of the third connecting seat 9, thereby achieving angular positioning of the first clamp 10.

[0073] For further information, see Figure 7 , Figure 7 The structure of the slider 12 is shown. Figure 4 It is shown that one side of the fixing sleeve 13 is movably connected to the slider 12; Figure 7 It is shown that the fixing sleeve 13 and the other side of the sliding block 12 have a fifth screw hole 27 on the same axis;

[0074] A fifth fastener 28 is included, and the fifth fastener 28 is threadedly connected to the fifth screw hole 27 . Figure 1 and Figure 4 The fifth fastener 28 is shown to be threadedly connected to the fifth screw hole 27. The fifth fastener 28 can be moved upward or downward by rotating clockwise or counterclockwise. When the fifth fastener 28 moves downward, the end of the fifth fastener 28 can abut the surface of the main board 1. When the end of the fifth fastener 18 does not abut the surface of the main board 1, the slider 12 can slide back and forth in the slide groove 2. When the slider 12 is at a predetermined position, the fifth fastener 18 is rotated so that the end of the fifth fastener 18 abuts the surface of the main board 1, and the positioning of the slider 12 can be achieved.

[0075] Furthermore, the inner surfaces of the first clamping plate 10 and the second clamping plate 11 are respectively provided with a silicone pad fixedly connected thereto. The silicone pad is not drawn in the accompanying drawings, but those skilled in the art should understand that the silicone pad is a thin sheet of silicone material, such as Figure 6 As shown, the corresponding inner sides of the first splint 10 and the second splint 11 are respectively provided with silicone pads, and the silicone pads can be adhered to the surfaces of the first splint 10 and the second splint 11 by glue.

[0076] For further information, see Figure 5 The other end of the main screw rod 6 has a fixedly connected knob 29.

[0077] The words "first", "second" and similar words used in the specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "an" or "the" do not indicate a quantitative limitation, but rather indicate the presence of at least one. Words such as "include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprises" include the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0078] The above-mentioned preferred embodiments of the utility model are only and are not intended to limit the utility model. The protection scope of the utility model is defined by the attached claims. For ordinary technicians in this field, other embodiments can be obtained according to the drawings without creative work, and any changes based on the claims of the utility model are within the protection scope of the utility model.

Claims

1. A distraction device for experimental animal surgery, characterized in that: include: A main board, the surface of which has four slide grooves; the surface of the main board has a first connection seat, and the first connection seat has a first screw hole that runs through the front and rear sides; A second connecting seat, the second connecting seat is located above the main board; A main screw, the main screw being threadedly connected to the first screw hole, and one end of the main screw being movably connected to the second connecting seat; The second connecting seat is provided with expansion arms on both sides, and one end of each expansion arm is movably connected to the second connecting seat; and the two ends of the expansion arms are provided with push rods; One end of the push rod is movably connected to the second connecting seat, and the other end of the push rod is movably connected to the expansion arm; A third connecting seat, which is two in number, and the two third connecting seats are movably mounted on the other ends of the two expansion arms; Each of the third connecting seats has a first clamping plate that is movably connected, and the first clamping plate has a second clamping plate that is fixedly connected or detachably connected; The sliders are four in number, and the four sliders are slidably installed in the four slide grooves; each of the sliders is respectively installed with a fixing sleeve.

2. The experimental animal surgical distraction device according to claim 1, characterized in that: The surface of the mainboard is provided with a fixedly connected lifting guide column, and the lifting guide column is at a vertical angle; It comprises a lifting plate, the lifting plate has a lifting guide hole; the lifting guide column is slidably connected with the lifting guide hole; the first connecting seat is fixedly installed above the lifting plate; The side surface of the lifting plate has a second screw hole connected to the lifting guide hole; A second fastener is included, and the second fastener is threadedly connected in the second screw hole.

3. The experimental animal surgical distraction device according to claim 1, characterized in that: The bottom of the main board is provided with a placement slot.

4. The experimental animal surgical distraction device according to claim 2, characterized in that: The end of the expansion arm connected to the third connection seat has a fixedly connected connection shaft; The third connecting seat has an axial hole; the connecting shaft is movably installed in the axial hole; the side surface of the third connecting seat has a third screw hole connected to the axial hole; A third fastener is included, and the third fastener is threadedly connected in the third screw hole.

5. The experimental animal surgical distraction device according to claim 4, characterized in that: The third connecting seat has a positioning hole, and the positioning hole and the second screw hole are at an intersecting angle; The first clamping plate has a fourth screw hole, and the fourth screw hole and the positioning hole are located on the same axis; A fourth fastener is included, and the fourth fastener passes through the positioning hole and is threadedly connected with the fourth screw hole.

6. The experimental animal surgical distraction device according to claim 1, characterized in that: One side of the fixing sleeve is movably connected to the slider; the other sides of the fixing sleeve and the slider have a fifth screw hole on the same axis; A fifth fastener is included, and the fifth fastener is threadedly connected to the fifth screw hole.

7. The experimental animal surgical distraction device according to claim 1, characterized in that: The inner surfaces of the first clamping plate and the second clamping plate are respectively provided with fixedly connected silicone pads.

8. The experimental animal surgical distraction device according to claim 1, characterized in that: The other end of the main screw is provided with a fixedly connected knob.

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