Surgical retractor

Abstract

The retractor comprises traction plates, a handle, a driving assembly and a suction part, the two traction plates are arc knots and are symmetrically arranged, and the outer side faces of the two traction plates are fixedly connected with traction rods; the ends, away from each other, of the two handles are rotationally connected to the two traction rods through bearings correspondingly. The driving assembly is arranged between the ends, close to each other, of the two handles and used for adjusting the distance between the two traction plates. The two traction plates are each provided with a suction piece, each suction piece comprises a suction pad, and the outer side face of each traction plate is provided with a suction pad in an adhesive mode. According to the retractor for the operation, after the two traction plates are placed in an incision, the two traction plates are driven by the driving assembly to move in the opposite directions, so that the width of the incision is enlarged, the suction pad is tightly attached to section tissue at the incision at the moment, blood exuded from the section tissue is absorbed by the suction pad, and the operation is completed. Blood is prevented from flowing into the incision to influence the surgical field.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to a surgical retractor. Background Art

[0002] A retractor is a commonly used surgical instrument used to open and maintain the incision during surgery to expose the viscera in the cavity, provide surgical vision and operating space, etc. Although the retractor is not directly used for treatment, its performance plays a very important role in whether the operation can proceed smoothly.

[0003] During hepatobiliary surgery, after making an incision in the waist and abdomen, a retractor is needed to retract the tissues around the incision, thereby expanding the incision to expose the surgical field. However, in actual operation, although the use of the retractor can fully expose the surgical field, the tissue at the incision position will bleed, resulting in an unclear surgical field. During the operation, clinicians frequently use aspirators to absorb the oozing blood to make the surgical field clear. This situation significantly prolongs the operation time and increases unnecessary operations for doctors. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention proposes a surgical retractor to solve the problem that during surgery, clinicians frequently use aspirators to absorb exuded blood to provide a clear view of the surgical field, which significantly prolongs the operation time and increases unnecessary operations by doctors.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A surgical retractor, comprising:

[0007] There are two pulling plates, which are arc-shaped and symmetrically arranged, and the outer sides of the two pulling plates are fixedly connected with pulling rods;

[0008] There are two handles, and ends of the two handles that are away from each other are rotatably connected to the two pulling rods through bearings;

[0009] A driving assembly, which is disposed between the ends of the two handles that are close to each other and is used to adjust the distance between the two pulling plates; and

[0010] There are two suction pieces, each pulling plate is provided with a suction piece, the suction piece comprises a suction pad, and the outer side surface of each pulling plate is bonded with a suction pad.

[0011] The above-mentioned surgical retractor drives the two pulling plates to move in opposite directions through the driving assembly, thereby expanding the width of the incision, making the suction pad close to the cut surface tissue at the incision, so that the blood seeping from the cut surface tissue is absorbed by the suction pad, preventing blood from flowing into the incision and affecting the surgical field of view.

[0012] Furthermore, the suction part also includes a negative pressure pump and a suction tube. A baffle is fixedly provided at the bottom of the two pulling plates, and a suction groove is opened on the top surface of the baffle. One end of the suction tube slides through the top surface of the pulling plate and extends into the suction groove. The other end of the suction tube is connected to the negative pressure pump.

[0013] Furthermore, a slide groove is provided inside the pulling plate, and two ends of the slide groove respectively pass through the two ends of the pulling plate and are connected to the outside world. Extension plates are slidably provided inside both ends of the slide groove. The two ends of the two extension plates that are opposite to each other can respectively extend to the outside of the two ends of the slide groove. An extension piece is provided between the two ends of the two extension plates that are close to each other, which is used to adjust the distance between the ends of the two extension plates in the slide groove.

[0014] Furthermore, the extension member includes an extension rotary rod, a gear and two racks. The two end surfaces of the two extension plates that are close to each other are provided with extension grooves. The two ends of each rack are respectively inserted into the two extension grooves for sliding connection, and the ends of the two racks that are away from each other are respectively fixedly connected to the inner bottom walls of the two extension grooves. The gear is rotatably arranged in the middle of the inner bottom wall of the slide groove, and the gear is located between the ends of the two extension plates that are close to each other. The two sides of the gear are respectively meshed and connected with the opposite side surfaces of the two racks. The bottom of the extension rotary rod rotates through the top middle part of the pulling plate to extend into the slide groove and is clamped and connected with the top of the gear.

[0015] Furthermore, a stop hole connected to the slide groove is opened in the middle of the top of the pulling plate, a one-way bearing is fixed in the stop hole, a limiting groove is opened on the inner ring of the one-way bearing, and a limiting strip is fixed on the outer wall of the extended rotating rod, which can be inserted into the limiting groove and connected by snapping.

[0016] Furthermore, a slot is opened in the middle of the top of the gear, and the bottom of the extended rotary rod can be inserted into the slot for sliding connection. A limiting hole is opened inside the bottom of the extended rotary rod, and a vertical limiting plate is fixed at the center of the inner bottom wall of the slot. The top of the limiting plate slides through the bottom of the extended rotary rod and extends into the limiting hole and is fixed with a limiting disk. The depth of the limiting hole is the same as the length of the limiting strip.

[0017] Furthermore, the middle part of the attraction pad is bonded to the outer side of the pulling plate, the thickness of the two ends of the attraction pad is greater than the thickness of the middle part of the attraction pad, both ends of the attraction pad are fixed with hooks, and the end surfaces of the two extension plates away from each other are provided with hanging grooves, and the ends of the hooks can be hung in the hanging grooves.

[0018] Furthermore, the driving assembly includes a driving tube and a screw ring. The two handles are L-shaped and symmetrically arranged. The driving tube is located between the ends of the two push rods that are close to each other, and the ends of the two push rods that are close to each other are respectively inserted into the two ends of the driving tube for sliding connection. Two screw rings are fixed inside the two ends of the driving tube, and the two screw rings are respectively sleeved on the outside of the ends of the two handles that are close to each other and threadedly connected. The ends of the two handles that are far away from each other are opened with through holes, and the ends of the two pulling rods that are far away from each other are rotatably connected to the two through holes through bearings.

[0019] Furthermore, the top periphery of the attraction groove is all inclined.

[0020] The beneficial effects of the present invention are as follows: the surgical retractor drives the two extension plates to slide out of the traction plate by a certain length through the extension piece, so that the overall length of the extension plate and the traction plate becomes longer to adapt to the size of the incision; the driving component drives the two traction plates to move in opposite directions, thereby expanding the width of the incision, so that the suction pad is tightly attached to the cut surface tissue at the incision, so that the blood seeping from the cut surface tissue is absorbed by the suction pad, preventing the blood from flowing into the incision and affecting the surgical field of view; and the blood flowing from the suction pad to the suction groove can be sucked to the outside through the suction tube, avoiding too much blood gathering and flowing into the inside of the incision. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation of the present invention, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0022] Figure 1 A top view of the present invention;

[0023] Figure 2 for Figure 1 Sectional view of AA in the middle;

[0024] Figure 3 It is an enlarged schematic diagram of a part of the structure of the extension piece;

[0025] Figure 4 is a cross-sectional view of the extension;

[0026] Figure 5 for Figure 4 The enlarged schematic diagram of point B in the middle;

[0027] Reference numerals:

[0028] 10- pulling plate, 11- slide;

[0029] 20-handle;

[0030] 30-suction member, 31-suction pad, 32-suction tube, 33-negative pressure pump, 34-baffle, 35-suction groove, 36-hook;

[0031] 40-driving assembly, 41-driving tube, 42-screw ring;

[0032] 50- extension plate, 51- extension slot, 52- hanging slot;

[0033] 60-extension piece, 61-extension rotary rod, 62-gear, 621-slot, 63-rack, 641-guide bar, 642-guide groove, 65-one-way bearing, 651-limiting groove, 66-limiting bar, 671-limiting hole, 672-limiting plate, 673-limiting plate;

[0034] 70-Pull rod. DETAILED DESCRIPTION

[0035] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0036] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions and positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred position or element must have a specific direction, be constructed and operated in a specific way, and therefore should not be understood as a limitation on the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] See also Figure 1 to Figure 2A surgical retractor provided by the present invention includes a pulling plate 10, a handle 20, a driving assembly 40 and an attraction member 30. There are two pulling plates 10, which are arc-shaped and symmetrically arranged. The outer sides of the two pulling plates 10 are fixedly connected with pulling rods 70. There are two handles 20, and the ends of the two handles 20 that are far away from each other are rotatably connected to the two pulling rods 70 through bearings respectively; there are two attraction members 30, each pulling plate 10 is provided with a suction member 30, and the suction member 30 includes an attraction pad 31, and the outer side of each pulling plate 10 is bonded with an attraction pad 31, and the attraction pad 31 is elastic; the driving assembly 40 is arranged between the ends of the two handles 20 that are close to each other, and is used to adjust the distance between the two pulling plates 10.

[0039] When in use, after the doctor makes an incision, the bottoms of the two traction plates 10 are placed in the incisions respectively, and according to the required width of the incision, the two traction plates 10 are driven to move in opposite directions by the driving assembly 40, so as to expand the width of the incision; at this time, the suction pad 31 is tightly attached to the tissue at the incision, so that the blood seeping from the cut surface tissue is absorbed by the suction pad 31, preventing the blood from flowing into the incision and affecting the surgical field of view; and the suction pad 31 will also compress the cut surface tissue at the incision to reduce the outflow of blood.

[0040] Please also read Figure 3 Specifically, the suction member 30 further includes a negative pressure pump 33 and a suction tube 32. A baffle 34 is fixedly provided at the bottom of the two pulling plates 10. A suction groove 35 is provided on the top surface of the baffle 34. One end of the suction tube 32 slides through the top surface of the pulling plate 10 and extends into the suction groove 35. The other end of the suction tube 32 is connected to the negative pressure pump 33. When the blood exuded from the cut surface tissue at the incision is absorbed by the suction pad 31, the blood accumulates too much in the suction pad 31, so that the blood flows along the pulling plate 10 to the suction groove 35 and gathers. The negative pressure pump 33 is started to generate negative pressure in the suction tube 32, thereby sucking the blood in the suction groove 35 to the outside to prevent too much blood from gathering and flowing into the incision.

[0041] The top periphery of the suction groove 35 is all inclined, and the inclined surface has a guiding effect, so that the blood flowing out of the suction pad 31 flows into the suction groove 35 along the inclined surface. The surface of the suction pad 31 is a porous surface structure, so that the blood exuded from the cut surface tissue is easier to be absorbed by the suction pad 31.

[0042] Please also read Figure 4 and Figure 5In this embodiment, a slide groove 11 is provided inside the pulling plate 10, and the two ends of the slide groove 11 respectively penetrate the two ends of the pulling plate 10 and communicate with the outside. An extension plate 50 is slidably provided inside the two ends of the slide groove 11, and the two ends of the two extension plates 50 that are separated from each other can be respectively extended to the outside of the two ends of the slide groove 11. An extension piece 60 is provided between the two ends of the two extension plates 50 that are close to each other, which is used to adjust the distance between the ends of the two extension plates 50 in the slide groove 11. The doctor can drive the extension plate 50 to slide out of the slide groove 11 by a certain length through the extension piece 60 according to the size of the incision, so as to adapt to the size of the incision.

[0043] Specifically, the extension member 60 includes an extension rotary rod 61, a gear 62 and two racks 63. The two end surfaces of the two extension plates 50 close to each other are provided with extension grooves 51. The two ends of the two racks 63 are respectively inserted into the two extension grooves 51 for sliding connection, and the ends of the two racks 63 that are away from each other are respectively fixedly connected to the inner bottom walls of the two extension grooves 51. The gear 62 is rotatably arranged in the middle of the inner bottom wall of the slide groove 11, and the gear 62 is located between the ends of the two extension plates 50 close to each other. The two sides of the gear 62 are respectively meshed and connected with the opposite side surfaces of the two racks 63. The bottom of the extension rotary rod 61 rotates through the middle of the top of the pulling plate 10 and extends into the slide groove 11, and then is clamped and connected with the top of the gear 62. Among them, the upper and lower side walls in the two extension grooves 51 are provided with guide grooves 642, and the upper and lower side surfaces of the two racks 63 are fixedly provided with guide bars 641, which are inserted into the corresponding guide grooves 642 for sliding connection.

[0044] After the doctor makes an incision, according to the size of the incision, the extension rod 61 is rotated to drive the gear 62 to rotate forward, thereby driving the two racks 63 to move in opposite directions in the two extension slots 51. At this time, the two racks 63 drive the two extension plates 50 to slide out of the slide slot 11 by a certain length, thereby making the overall length of the extension plate 50 and the pulling plate 10 longer, thereby adapting to the size of the incision. In addition, the cooperation between the guide bar 641 and the guide slot 642 has a limiting and guiding effect on the sliding of the rack 63 in the extension slot 51, and also makes the gear 62 and the two racks 63 closely meshed to avoid separation.

[0045] Preferably, a stop hole connected to the slide slot 11 is provided at the middle of the top of the pulling plate 10, a one-way bearing 65 is fixed in the stop hole, a limiting groove 651 is provided in the inner ring of the one-way bearing 65, and a limiting strip 66 is fixed on the outer wall of the extension rotary rod 61, and the limiting strip 66 can be inserted into the limiting groove 651 for connection. Since the one-way bearing 65 can only rotate in one direction, the extension rotary rod 61 will not rotate back after forward rotation, thereby ensuring that the extension plate 50 will not retract into the slide slot 11 after sliding out; and when the extension plate 50 needs to slide into the extension slot 51, the extension rotary rod 61 is pulled upwards so that the limiting strip 66 slides completely to the outside of the limiting groove 651, and the extension rotary rod 61 can rotate in the reverse direction.

[0046] Furthermore, a slot 621 is provided in the middle of the top of the gear 62, and the bottom of the extension rotary rod 61 can be inserted into the slot 621 for sliding connection. A limiting hole 671 is provided inside the bottom of the extension rotary rod 61, and a vertical limiting plate 672 is fixed at the center of the inner bottom wall of the slot 621. The top of the limiting plate 672 slides through the bottom of the extension rotary rod 61 and extends into the limiting hole 671 and is fixed with a limiting plate 673. The depth of the limiting hole 671 is the same as the length of the limiting strip 66. Among them, the clamping force between the limiting strip 66 and the limiting groove 651 is relatively large, and the limiting strip 66 can only slide out of the limiting groove 651 when the doctor exerts force.

[0047] In the initial state, the top of the limit plate 673 rests on the inner top wall of the limit hole 671, and the bottom of the extension rotary rod 61 is inserted into the slot 621 for plug connection. When the limit bar 66 is completely slid to the outside of the limit slot 651, the limit plate 673 moves down until it rests on the inner bottom wall of the limit hole 671. At this time, due to the limited sliding of the limit plate 672 and the extension rotary rod 61, the extension rotary rod 61 can drive the gear 62 to rotate in the opposite direction after reverse rotation, thereby retracting the extension plate 50 into the slide groove 11.

[0048] like Figure 1 As shown, in this embodiment, the middle of the suction pad 31 is bonded to the outer side of the pulling plate 10, the thickness of the two ends of the suction pad 31 is greater than the thickness of the middle part of the suction pad 31, and hooks 36 are fixedly provided at both ends of the suction pad 31. The end faces of the two extension plates 50 that are away from each other are provided with hanging grooves 52, and the ends of the hooks 36 can be hung in the hanging grooves 52. When the two extension plates 50 slide out of the slide grooves 11 and move the length, in order to ensure that the suction pad 31 contacts the cut surface tissue at the incision, the ends of the hooks 36 are hung in the hanging grooves 52, thereby stretching the two ends of the suction pad 31, so that the suction pad 31 can be closely attached to the cut surface tissue, and then can absorb the blood exuded from the cut surface tissue.

[0049] In this embodiment, the driving assembly 40 includes a driving tube 41 and a screw ring 42. The two handles 20 are L-shaped and symmetrically arranged. The driving tube 41 is located between the ends of the two push rods that are close to each other, and the ends of the two push rods that are close to each other are respectively inserted into the two ends of the driving tube 41 for sliding connection. Two screw rings 42 are fixed inside the two ends of the driving tube 41, and the two screw rings 42 are respectively sleeved on the outer sides of the ends of the two handles 20 that are close to each other and are threadedly connected. The ends of the two handles 20 that are far away from each other are opened with through holes, and the ends of the two pulling rods 70 that are far away from each other are rotatably connected to the two through holes through bearings.

[0050] When the two traction plates 10 are placed in the incision, the forward rotation of the driving tube 41 drives the ends of the two handles 20 that are close to each other to move in opposite directions inside the driving tube 41, thereby driving the two push rods to move in opposite directions, so that the distance between the two traction plates 10 is adjusted to the required size, thereby expanding the width of the incision; and due to the rotational connection between the push rod and the end of the handle 20, the driving tube 41 can be placed on the patient to avoid blocking the incision and affecting the surgical field of view.

[0051] The working principle of the present invention is as follows: when in use, after the doctor makes an incision, according to the size of the incision, the doctor rotates the extension rotary rod 61 in the forward direction, drives the gear 62 to rotate in the forward direction, and drives the two racks 63 to move in opposite directions in the two extension slots 51, so that the two extension plates 50 slide out of the slide slot 11 by a certain length respectively, so that the overall length of the extension plate 50 and the traction plate 10 becomes longer to adapt to the size of the incision; then the end of the hook 36 is hung in the hanging slot 52, so that the two ends of the suction pad 31 are stretched; then the two traction plates 10 are placed in the incision, and the baffle 34 is located below the cut surface tissue; the driving tube 41 is rotated forward to drive the ends of the two handles 20 that are close to each other to move in opposite directions inside the driving tube 41, and then drive the two push rods to move in opposite directions, so that the distance between the two traction plates 10 is adjusted to the required size, thereby expanding the width of the incision; at this time, the suction pad 31 is tightly attached to the cut surface tissue.

[0052] When blood seeps out of the cut surface tissue at the incision, the blood will be absorbed by the suction pad 31; when too much blood accumulates in the suction pad 31, the blood will flow along the pulling plate 10 to the suction groove 35 and gather there. The negative pressure pump 33 is started to make the suction tube 32 generate negative pressure, thereby sucking the blood in the suction groove 35 to the outside to prevent too much blood from gathering and flowing into the incision.

[0053] Beneficial effects of the present invention: the surgical retractor drives the two extension plates 50 to slide out of the pulling plate 10 by a certain length through the extension piece 60, so that the overall length of the extension plate 50 and the pulling plate 10 becomes longer to adapt to the size of the incision; the driving component 40 drives the two pulling plates 10 to move in opposite directions, thereby expanding the width of the incision, so that the suction pad 31 is tightly attached to the cut surface tissue at the incision, so that the blood seeping out of the cut surface tissue is absorbed by the suction pad 31, preventing the blood from flowing into the incision and affecting the surgical field of view; and the blood flowing from the suction pad 31 to the suction groove 35 can be sucked to the outside through the suction tube 32, avoiding too much blood from gathering and flowing into the inside of the incision.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A surgical retractor, characterized in that: include: There are two pulling plates, both of which are arc-shaped and symmetrically arranged, and the outer sides of the two pulling plates are fixedly connected with pulling rods; There are two handles, and ends of the two handles that are away from each other are rotatably connected to the two pulling rods through bearings; A driving assembly, which is disposed between the ends of the two handles that are close to each other and is used to adjust the distance between the two pulling plates; and There are two suction pieces, each pulling plate is provided with a suction piece, and the suction piece includes a suction pad, and the outer side surface of each pulling plate is bonded with a suction pad.

2. A surgical retractor according to claim 1, characterized in that: The suction member also includes a negative pressure pump and a suction tube. A baffle is fixedly provided at the bottom of the two pulling plates. A suction groove is opened on the top surface of the baffle. One end of the suction tube slides through the top surface of the pulling plate and extends into the suction groove. The other end of the suction tube is connected to the negative pressure pump.

3. A surgical retractor according to claim 2, characterized in that: A sliding groove is provided inside the pulling plate, and two ends of the sliding groove respectively pass through the two ends of the pulling plate and are connected to the outside. Extension plates are slidably provided inside both ends of the sliding groove. The two ends of the two extension plates that are opposite to each other can respectively extend to the outside of the two ends of the sliding groove. An extension piece is provided between the two ends of the two extension plates that are close to each other, which is used to adjust the distance between the ends of the two extension plates in the sliding groove.

4. A surgical retractor according to claim 3, characterized in that: The extension member includes an extension rotary rod, a gear and two racks. The two end surfaces of the two extension plates that are close to each other are provided with extension grooves. The two ends of each rack are respectively inserted into the two extension grooves for sliding connection, and the ends of the two racks that are away from each other are respectively fixedly connected to the inner bottom walls of the two extension grooves. The gear is rotatably arranged in the middle of the inner bottom wall of the slide groove, and the gear is located between the ends of the two extension plates that are close to each other. The two sides of the gear are respectively meshed and connected with the opposite side surfaces of the two racks. The bottom of the extension rotary rod rotates through the top middle part of the pulling plate, extends into the slide groove, and is clamped and connected with the top of the gear.

5. A surgical retractor according to claim 4, characterized in that: A stop hole connected to the slide groove is provided in the middle of the top of the pulling plate, a one-way bearing is fixed in the stop hole, a limiting groove is provided on the inner ring of the one-way bearing, a limiting strip is fixed on the outer wall of the extended rotating rod, and the limiting strip can be inserted into the limiting groove for snap connection.

6. A surgical retractor according to claim 5, characterized in that: A slot is provided in the middle of the top of the gear, and the bottom of the extended rotary rod can be inserted into the slot for sliding connection. A limiting hole is provided inside the bottom of the extended rotary rod, and a vertical limiting plate is fixed at the center of the inner bottom wall of the slot. The top end of the limiting plate slides through the bottom of the extended rotary rod and extends into the limiting hole and is fixed with a limiting disk. The depth of the limiting hole is the same as the length of the limiting strip.

7. A surgical retractor according to claim 3, characterized in that: The middle part of the attraction pad is bonded to the outer side of the pulling plate, the thickness of the two ends of the attraction pad is greater than the thickness of the middle part of the attraction pad, both ends of the attraction pad are fixed with hooks, and the end surfaces of the two extension plates away from each other are provided with hanging grooves, and the ends of the hooks can be hung in the hanging grooves.

8. A surgical retractor according to claim 1, characterized in that: The driving assembly includes a driving tube and a screw ring. The two handles are L-shaped and symmetrically arranged. The driving tube is located between the ends of the two push rods that are close to each other, and the ends of the two push rods that are close to each other are respectively inserted into the two ends of the driving tube for sliding connection. Two screw rings are fixed inside the two ends of the driving tube, and the two screw rings are respectively sleeved on the outside of the ends of the two handles that are close to each other and threadedly connected. The ends of the two handles that are far away from each other are opened with through holes, and the ends of the two pulling rods that are far away from each other are rotatably connected to the two through holes through bearings.

9. A surgical retractor according to claim 2, characterized in that: The top periphery of the attraction groove is all inclined.

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