Handheld surgical incision retractor capable of synchronously operating two groups of retractor components

Abstract

The invention relates to the technical field of medical apparatus and instruments, and particularly discloses a handheld surgical incision retractor capable of synchronously operating two retractor assemblies, which comprises a first retractor assembly, a second retractor assembly, a holding handle and a scissors fork assembly, the first drag hook assembly and the second drag hook assembly are respectively provided with a traction rod and a drag hook which are of a bending structure; the first traction rod and the second traction rod are movably arranged in the holding handle in a penetrating mode, the ends of the first traction rod and the second traction rod are disconnected and matched, and the first drag hook and the second drag hook are arranged outside the holding handle and matched oppositely; the joint end of the shear fork assembly is hinged to the first traction rod and the second traction rod at the holding handle, the force application end of the shear fork assembly extends away from the holding handle, and when the force application end of the shear fork assembly moves close to the holding handle, the first drag hook and the second drag hook are driven to move oppositely. The two groups of drag hook assemblies which are synchronously operated are effectively integrated, synchronous tensioning / folding operation of the two groups of drag hook assemblies by a single person and a single hand can be realized, and the relative angle between the two groups of drag hooks is kept unchanged in the operation process.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, in particular to a handheld surgical incision retractor for synchronously operating two groups of retractor assemblies. Background Art

[0002] The surgical incision retractor is used to moderately stretch and support the human tissue around the incision during surgical operations, so as to form an intuitive visual window at the surgical incision that conforms to the surgical operation and directly expose the human tissue under the surgical incision.

[0003] Traditional surgical retractors consist of an L-shaped, bent pull rod and a retractor hook. The pull rod is used for hand-held force application, while the retractor hook is inserted into the surgical incision, where it provides appropriate tension and support to the tissue at the incision. The retractor is a flat, plate-like structure with a tensioning surface (oriented in the direction of the pull rod) for tensioning and supporting the tissue and a window-like surface (oriented away from the pull rod) for exposing the incision area. When used in surgical procedures, this type of retractor utilizes two independent handles of the same specification (specific specifications depend on the size of the surgical incision) to apply tension in opposite directions on the left and right sides of the surgical incision.

[0004] The traditional L-shaped surgical retractor, due to the special characteristics of the two handles moving in opposite directions on the left and right sides of the surgical incision, and the characteristics of the two handles working independently of each other, inevitably requires two surgical operators to hold one each, one on the left and one on the right to perform appropriate tensioning operations. The technical problems it has are obvious: First, it requires two people to collaborate, cannot be completed by one person, and consumes manpower; Secondly, the left and right tensioning force of the two people cannot be effectively balanced and controlled, which can easily lead to asymmetric left and right tensioning of the surgical incision, and then the subsequent surgical incision will be skewed and obviously deviate from the midline, resulting in the final surgical incision being obviously skewed and uneven. The entire tensioning support process requires continuous observation and repeated coordination of the tensioning force of the two people based on the subjective experience of the surgical personnel, which is not conducive to ensuring the quality of the operation and improving the efficiency of the operation.

[0005] In order to solve the above technical problems of the traditional L-shaped surgical incision retractor, various surgical incision retractors that do not require two people to cooperate have been disclosed in the industry, such as the Chinese patent document entitled “A new type of forceps small incision retractor”, publication number CN 201320197 Y, publication date October 7, 2009, the Chinese patent document entitled “Forceps retractor”, publication number CN203914979 U, publication date November 5, 2014, the Chinese patent document entitled “A medical retractor for tension-free repair of inguinal hernia”, publication number CN 202235500 U, publication date May 30, 2012, the Chinese patent document entitled “Tissue retractor for surgery”, publication number CN 116058895 A, publication date May 5, 2023, and the Chinese patent document entitled “A retractor for gastroesophageal junction surgery and its use method”, publication number CN 116725591 A. The disclosure date is September 12, 2023, and other technologies.

[0006] However, although the technologies of publication numbers CN 201320197 Y, CN 203914979 U, and CN 202235500 U can achieve single-handed operation by one person, their operating levers are elastically structured to form a scissor-like fit, which results in the following major technical problems: During the tensioning operation, the angle between the two sets of retractors changes dynamically. In this case, the direction of the force exerted by the retractors on the pulled tissue is constantly changing, causing the angle of the pulled tissue relative to the midline of the incision to constantly change, making the incision cross-section appear triangular or prismatic, which cannot expose the midline of the incision to the greatest extent and affects the operation.

[0007] The technologies disclosed in publication numbers CN 116058895 A and CN 116725591 A use an operating table as a support carrier. Specifically, the structure of the surgical incision retractor includes, in addition to the necessary retractor assembly, a bracket supporting the retractor assembly on the operating table, and a motor and transmission structure driving the retractor assembly on the bracket. This leads to the following major technical problems: 1. This type of surgical retractor, which uses an operating table as a support, has a complex structure, is bulky, and heavy. It lacks portability and flexibility during use, which affects the responsiveness and maneuverability of surgical operations. Specifically, during the process of incising tissue, a retractor is needed to pull the incised tissue apart to expose the midline of the incision, and then continue incising. During this process, the retractor needs to be constantly adjusted to adapt to the traction of the changing incision depth. Obviously, this surgical incision retractor, which is supported by an operating table and lacks portability and flexibility, is not suitable for use scenarios where the traction depth and width need to be constantly adjusted, such as traction during tissue incision. 2. The surgical incision retractor fixed to the operating table takes up the already cramped operating table space, hindering the convenience and flexibility of the surgical staff in performing the operation around the operating table; 3. The complex structure and large size of surgical incision retractors require tedious disassembly and installation operations during cleaning, disinfection and use, which not only increases the cost of cleaning and disinfection, but also increases the labor intensity and reduces the work efficiency.

[0008] In view of this, it is necessary to design a handheld surgical incision retractor that can enable a single person to perform synchronous tensioning / closing operations on two sets of retractor assemblies with one hand, and the relative angle between the two sets of retractors remains unchanged during the operation, with the technical characteristics of simple structure, light weight and flexibility, and easy use. Summary of the Invention

[0009] The technical purpose of the present invention is to provide a handheld surgical incision retractor that can realize the synchronous tensioning / closing operation of two sets of retractor assemblies by one person with one hand, and the relative angle between the two sets of retractors remains unchanged during the operation, with the technical characteristics of simple structure, light weight, flexibility and easy use, in view of the particularity of the above-mentioned surgical incision tensioning support and the shortcomings of the existing technology.

[0010] The technical purpose of the present invention is achieved through the following technical solution: a handheld surgical incision retractor for synchronously operating two sets of retractor assemblies, comprising a first retractor assembly and a second retractor assembly; The first hook assembly comprises a first traction rod and a first hook connected together and matched with an L-shaped / T-shaped bending structure; The second hook assembly comprises a second traction rod and a second hook connected together and matched with an L-shaped / T-shaped bending structure; The surgical incision retractor also includes a gripping handle and a scissor fork assembly; The first pulling rod of the first retractor assembly and the second pulling rod of the second retractor assembly are installed in the holding handle in a movable structure. The ends of the first retractor rod and the second retractor rod are disconnected and matched at the holding handle. The first retractor hook of the first retractor assembly and the second retractor hook of the second retractor hook assembly are arranged outside the holding handle. The notched construction surfaces of the first retractor hook and the second retractor hook are matched with each other outside the holding handle. The joint end of the scissor assembly is hinged to the first traction rod and the second traction rod at the gripping handle, the force-applying end of the scissor assembly extends away from the gripping handle, and the force-applying end of the scissor assembly and the gripping handle are within a one-handed operation range; When a force is applied to the force-applying end of the scissors assembly toward the gripping handle, the force-applying end of the scissors assembly moves toward the gripping handle, driving the first hook of the first hook assembly and the second hook of the second hook assembly to move away from each other.

[0011] The above-mentioned technical measures address the particularities of the aforementioned surgical incision tensioning support. Based on the main structure of a conventional L-shaped surgical incision retractor, the pull rods of the two retractor assemblies are integrated into a single gripping handle and hingedly connected to the scissor assembly. During the expansion / closing of the scissor assembly, the retractors of the two retractor assemblies are driven to move in opposite directions or toward each other, respectively. The force-applying end and gripping handle of the scissor assembly are within the one-handed operating range (based on the one-handed operating range of an average adult). Thus, the surgical incision retractor of the above-mentioned technical measures effectively integrates two retractor assemblies that can be operated simultaneously, enabling a single person to perform the simultaneous expansion / closing operation of the two retractor assemblies with a single hand, while maintaining a constant relative angle between the two retractors during operation. The overall structure is simple, lightweight, flexible, and easy to use. When used in clinical surgery, it is as lightweight and flexible as a typical handheld medical device, presenting little hindrance to the responsiveness and maneuverability of the surgical procedure, thus ensuring convenient and flexible surgical operations.

[0012] As one of the preferred technical solutions, the scissor assembly comprises a first scissor rod and a second scissor rod hinged together in the middle; The joint end of the first scissor rod is hinged to the end of the first traction rod at the grip handle; The joint end of the second scissor rod is hinged to the end of the second traction rod at the grip handle; The force-applying end of the first scissor rod and the force-applying end of the second scissor rod drive the first hook of the first hook assembly and the second hook of the second hook assembly to move toward each other during the process of approaching each other; During the separation process, the force-applying end of the first scissor rod and the force-applying end of the second scissor rod drive the first hook of the first hook assembly and the second hook of the second hook assembly to move in opposite directions; The force-applying end of the scissor assembly and the gripping handle are within the single-handed gripping range.

[0013] The above-mentioned scissors-fork assembly has a simple molding structure, and can smoothly, smoothly and labor-savingly realize the synchronous tensioning / closing operation of the two sets of hook assemblies, and the relative angle between the two sets of hooks remains unchanged during the operation. On the premise of satisfying the synchronous driving of the two sets of hook assemblies, it can be combined with the grip handle to reliably form a handheld structure that can be operated by one person with one hand.

[0014] Furthermore, the scissor assembly also has a force-applying handle; The force-applying handle is assembled on the force-applying ends of the first scissor rod and the second scissor rod in a sliding structure; When a force is applied to the force-applying end of the scissors assembly toward the gripping handle, the first scissors rod and the second scissors rod move away from each other at the force-applying handle by holding the spreading force-applying handle with fingers and moving toward the gripping handle.

[0015] The above technical measures are achieved by slidingly assembling a force-applying handle at the force-applying end of the scissor assembly, and using the palm and fingers to hold the force-applying handle to move closer to / away from the holding handle, so as to slide and drive the two scissor rods of the scissor assembly to open / close smoothly, smoothly and labor-savingly, which is more conducive to the light and comfortable gripping operation by one person with one hand.

[0016] Furthermore, the spreading force applying handle has a second sliding groove for sliding assembly of the first scissor rod and the second scissor rod; The force-applying end of the first scissor lever is hinged to a first roller, and the force-applying end of the first scissor lever is slidably assembled in the second sliding groove of the open force-applying handle via the first roller; The force-applying end of the second scissor-type rod is hinged with a second roller, and the force-applying end of the second scissor-type rod is slidably assembled in the second sliding groove of the open force-applying handle through the second roller.

[0017] The above technical measures assemble the two scissor rods of the scissor assembly with a roller sliding structure in the slide groove of the opening force handle, which can ensure that the opening / closing action of the two scissor rods driven by the opening force handle is smoother, more fluid, more labor-saving and more stable.

[0018] Furthermore, the force-applying handle has a plurality of force-applying handle halves that are joined together in the circumferential direction, and a second sliding groove is formed on the joining surfaces of the plurality of force-applying handle halves; The multiple force-applying handle halves that are butt-jointed and assembled in the circumferential direction are fixed into an integral structure in the circumferential direction by a locking structure.

[0019] The above technical measures are aimed at the two scissor rods of the above-mentioned scissor assembly. The particularity of the sliding assembly structure inside the expansion force handle can make the assembly combination of the scissor rods inside the expansion force handle easy to achieve and convenient for manufacturing and forming. After disassembly, it is also beneficial to clean and disinfect possible blind spots for sanitation and disinfection.

[0020] As one of the preferred technical solutions, the scissor assembly further comprises a traction spring; The traction spring is used to pull the first scissor rod and the second scissor rod in opposite directions; and / or, the traction spring is used to pull the first traction rod and the second traction rod that are stretched at the grip handle in opposite directions.

[0021] The above technical measures, by arranging a traction spring in the scissor-fork assembly, can use the contraction elastic force of the traction spring to pull the two stretched scissor-fork rods or two traction rods in the opposite direction (i.e., pull them together). In this way, once the force applied by the force-applying end of the scissor-fork assembly is eliminated, the two scissor-fork rods of the scissor-fork assembly / the traction rods of the two sets of hook assemblies automatically close, and correspondingly, the hooks of the two sets of hook assemblies are driven to automatically close, i.e., reset, without the need for applying force for closing, and the controllability is strong.

[0022] Furthermore, the traction spring is connected between the first traction rod and the second traction rod at the gripping handle, and is used to pull the first traction rod and the second traction rod in opposite directions. When the force-applying end of the scissor assembly does not apply a force toward the gripping handle, the ends of the first traction rod and the second traction rod move toward each other at the gripping handle under the traction action of the traction spring; Correspondingly, the first hook of the first hook assembly and the second hook of the second hook assembly move toward each other.

[0023] The above technical measures arrange the traction spring between the two traction rods inside the grip handle. On the one hand, it can stably achieve the above-mentioned technical purpose of reverse traction. On the other hand, it can effectively simplify the overall structure outside the grip handle, making the molding structure of the scissors fork assembly outside the grip handle simpler. The presence of the traction spring will not hinder the stability, comfort and safety of one-handed grip.

[0024] As one of the preferred technical solutions, the ends of the first traction rod and the second traction rod are installed inside the gripping handle, and the ends of the first traction rod and the second traction rod are spaced apart and matched in the same rod-through hole of the gripping handle; Correspondingly, the gripping handle has a first sliding groove for the first scissor rod and the second scissor rod of the scissor assembly to pass through and connect to the corresponding traction rod in the corresponding rod penetration hole.

[0025] The above-mentioned technical measures are aimed at the particularity of the scissors-fork assembly to expand and drive the traction rod at the gripping handle, so that the two scissors rods of the scissors-fork assembly extend into the gripping handle through the slide groove on the gripping handle and are connected to the corresponding traction rod, so that the connection position between the scissors rods and the corresponding traction rods is located inside the gripping handle. On the one hand, it can stably achieve the technical purpose of the above-mentioned scissors-fork assembly driving the two sets of hook assemblies. On the other hand, it can effectively simplify the overall structure of the outside of the gripping handle, making the molded structure of the outside of the gripping handle as simple as possible, and will not hinder the stability, comfort and safety of one-handed grip.

[0026] Furthermore, the gripping handle is provided with a first rod-penetrating hole and a second rod-penetrating hole which are independent of each other, and the first rod-penetrating hole and the second rod-penetrating hole are respectively through-hole structures formed along the axial direction of the gripping handle; The first traction rod is movably installed in the first rod hole of the gripping handle, and the first traction rod is a U-shaped bend structure at the end of the gripping handle away from the first retractor hook, and the straight section of the distal end of the U-shaped bend structure is movably installed in the second rod hole of the gripping handle; The second traction rod is movably installed in the second rod hole of the gripping handle; The end of the first traction rod and the end of the second traction rod are matched with each other in the second rod-through hole of the gripping handle; The second pull hook connected to the second pulling rod is located on a side of the first pull hook connected to the first pulling rod away from the gripping handle.

[0027] The above technical measures are aimed at the particularity of the traction rods of the two groups of hook assemblies being installed in the same direction in the same gripping handle and being connected to the scissors-fork assembly, so that the traction rod of one group of hook assemblies is inserted into the rod hole where the traction rod of the other group of hook assemblies is located with a return bend structure. Therefore, under the expansion drive of the same scissors-fork assembly, the traction rod with the return bend structure drives the corresponding hook to move toward the direction approaching the gripping handle, and the other traction rod drives the corresponding hook to move away from the gripping handle, so as to ensure that the hooks of the two groups of hook assemblies form a tensioning action of moving in opposite directions when the incision is expanded.

[0028] In addition, the above technical measures, when performing vertical incision traction commonly used in surgery, can achieve the tensioning operation of the retractor by the surgeon's palm and fingers cooperating to overcome the elastic force. The surgeon's back of the hand is facing downward, the operating hand is close to the surgeon's abdomen, the operating palm is basically parallel to the incision, and the operating palm basically does not perform abduction and adduction movements with the wrist joint as a fulcrum; thus, during the surgical traction process, the surgeon's shoulder joint, elbow joint and wrist joint can easily achieve the operating posture of the hand with less movement changes on the basis of a natural and comfortable body position, making the operation more comfortable for the surgeon; When performing traction on a transverse incision during surgery, the operator's palm and fingers can cooperate to overcome the elastic force to achieve the tensioning operation of the retractor. The operator's palm can be basically parallel to the incision whether the back of the hand is facing down or up, and the operator's palm will basically not perform abduction and adduction movements with the wrist joint as a fulcrum. In this way, during the surgical traction process, the operator's shoulder joint, elbow joint and wrist joint can easily achieve the hand operation posture with fewer movement changes on the basis of a natural and comfortable posture, so that the operator can operate more comfortably.

[0029] Furthermore, a traction spring of the scissor assembly is installed in the second rod hole of the gripping handle; The traction spring is connected between the first traction rod and the second traction rod in the second rod penetration hole.

[0030] The above technical measures are designed for the insertion structure of the traction rods of the two groups of hook assemblies in the gripping handle to ensure that the traction spring pulls the two traction rods in the same rod insertion hole in opposite directions.

[0031] Furthermore, the portion of the second traction rod extending out of the gripping handle has a bent yielding structure, and the second pull hook under the transition of the bent yielding structure forms an aligned fit with the first pull hook at the left and right positions.

[0032] The above technical measures are aimed at the particularity that the traction rods of the above-mentioned two groups of hook assemblies are installed in the same direction in the same gripping handle, and the hooks of the two groups of hook assemblies need to move in opposite directions for tensioning. A bent yielding structure is formed on one traction rod, so that the hooks of the two groups of hook assemblies are aligned with each other on the left and right, to ensure that the hooks of the two groups of hook assemblies form a reverse balanced force and tensioning with the left and right positions basically aligned when tensioning and supporting the surgical incision.

[0033] Moreover, the above-mentioned bending and giving way structure avoids the corresponding traction rod from crossing the left and right matching distances of the two sets of hooks at the top in the top view, forming a circuitous arrangement structure. Therefore, when the surgical incision is tensioned and supported, the traction rod of the bending and giving way structure basically bypasses the exposed area of ​​the surgical incision from directly above, greatly reducing the position interference with the surgical operation and being more reliable.

[0034] As one of the preferred technical solutions, the bent and yielding structure of the second traction rod is aligned with the position of the first traction rod extending out of the gripping handle; The bent and yielding structure of the second traction rod is provided with a third rod-penetrating hole for the first traction rod to movably pass through.

[0035] The above technical measures are aimed at the particularity of the bending and giving way structure of the two groups of hook assemblies when the hooks are aligned and matched on the left and right, and a through-rod structure is formed at the bending and giving way structure to avoid position interference, so that one traction rod can pass through the arrangement of another traction rod.

[0036] Furthermore, the second traction rod is connected to a locking screw that is spirally inserted into the third through-rod hole; Unscrewing the locking screw of the third rod-penetrating hole, and loosening the first traction rod installed in the third rod-penetrating hole; The locking screw is screwed into the third through-rod hole to tighten the first traction rod installed in the third through-rod hole.

[0037] The above technical measures are directed at the through-rod structure between the two traction rods. By arranging locking screws in the corresponding through-rod holes, the relative motion position between the traction rods of the two retractor assemblies can be locked and positioned. In this way, when the retractors of the two retractor assemblies have tensioned and supported the surgical incision to a predetermined position and need to maintain stable tension and support in this position for a period of time, the locking screws are tightened to ensure that the relative position between the retractors of the two retractor assemblies remains stable, achieving stable support for the surgical incision. This eliminates the need for the operator to apply a certain gripping force to maintain the stable position of the retractors, which helps to increase the comfort of the operation.

[0038] Furthermore, the gripping handle comprises a plurality of gripping handle halves that are butt-jointed in the circumferential direction, and a first sliding groove and a rod-through hole are formed on the butt-jointed surfaces of the plurality of gripping handle halves; The multiple gripping handle halves that are butt-jointed in the circumferential direction are fixed into an integral structure in the circumferential direction by a locking structure.

[0039] The above technical measures are aimed at the particularity of the assembly of the traction rod of the above-mentioned hook assembly inside the gripping handle, and the particularity of the assembly of the two scissor rods and traction spring of the above-mentioned scissor assembly inside the gripping handle. It can make the assembly combination of the traction rod of the hook assembly and the scissor rods and traction spring of the scissor assembly in the gripping handle easy to realize, convenient for manufacturing and molding, and after disassembly, it is also beneficial to clean and disinfect possible blind spots for sanitation and disinfection.

[0040] As one of the preferred technical solutions, the first hook of the first hook assembly has a first substrate; The first substrate has first vertical folding edges at both side edges in the width direction, which are respectively protruded toward one side of the first incision construction surface.

[0041] The retractor of the above technical measures can provide tension support to the human tissues on both sides of the current tensioning direction (ie, the human tissues at both ends of the surgical incision) to ensure stable construction of the exposed area of ​​the incision.

[0042] Furthermore, the first vertical folds on both sides of the width direction of the first substrate are equipped with an obtuse-angle flaring structure. This technical measure is conducive to effectively increasing the exposed area of ​​the incision and providing a good tension support effect on the surgical incision.

[0043] Furthermore, the transition between the first vertical folded edge and the first substrate is a smooth curved surface structure; The edge of the first vertical fold is a smooth rounded structure.

[0044] The above technical measures are friendly to human tissue and basically will not scratch human tissue during tensioning support.

[0045] Furthermore, the first substrate has a first transverse folded edge at the bottom in the height direction, which is bent and convex toward one side of the first incision tensioning surface; The first transverse folded edge is matched with the first substrate at an obtuse angle.

[0046] The above technical measures are based on the particularity of cutting the surgical incision layer by layer and stably constructing the exposed area of ​​the incision. The horizontal fold at the bottom of the retractor can form a reliable tension support for the bottom layer of human tissue in the surgical incision, effectively solving the problem of interference with the surgical operation caused by the squeezing of the bottom layer of human tissue in the surgical incision at the bottom edge of the retractor.

[0047] Furthermore, the transition between the first transverse folded edge and the first substrate is a smooth curved surface structure; The edge of the first transverse fold is a smooth rounded structure.

[0048] The above technical measures are friendly to human tissue and basically will not scratch human tissue during tensioning support.

[0049] As one of the preferred technical solutions, the second hook of the second hook assembly has a second substrate; The second substrate has second vertical folds at both side edges in the width direction, which are respectively protruded toward one side of the second incision construction surface.

[0050] The retractor of the above technical measures can provide tension support to the human tissues on both sides of the current tensioning direction (ie, the human tissues at both ends of the surgical incision) to ensure stable construction of the exposed area of ​​the incision.

[0051] Furthermore, the second vertical folds on both sides of the width direction of the second substrate are equipped with an obtuse-angle flaring structure. This technical measure is conducive to effectively increasing the exposed area of ​​the incision and providing good tension support for the surgical incision.

[0052] Furthermore, the transition between the second vertical folded edge and the second substrate is a smooth curved surface structure; The edge of the second vertical fold is a smooth rounded structure.

[0053] The above technical measures are friendly to human tissue and basically will not scratch human tissue during tensioning support.

[0054] Furthermore, the second substrate has a second transverse folded edge at the bottom in the height direction, which is bent and convex toward the second incision tensioning surface; The second transverse folded edge is matched with the second base plate at an obtuse angle.

[0055] The above technical measures are based on the particularity of cutting the surgical incision layer by layer and stably constructing the exposed area of ​​the incision. The horizontal fold at the bottom of the retractor can form a reliable tension support for the bottom layer of human tissue in the surgical incision, effectively solving the problem of interference with the surgical operation caused by the squeezing of the bottom layer of human tissue in the surgical incision at the bottom edge of the retractor.

[0056] Furthermore, the transition between the second transverse folded edge and the second substrate is a smooth curved surface structure; The edge of the second transverse fold is a smooth rounded structure.

[0057] The above technical measures are friendly to human tissue and basically will not scratch human tissue during tensioning support.

[0058] The beneficial technical effects of the present invention are as follows: the above technical measures are targeted at the particularity of the above-mentioned surgical incision tensioning support. Based on the main structure of the traditional L-shaped surgical incision retractor, the traction rods of the two retractor assemblies are integrated into the same gripping handle and hingedly connected to the scissor fork assembly. During the expansion / closing process of the scissor fork assembly, the retractors of the two retractor assemblies are driven to move away from each other or towards each other, and the force-applying end and gripping handle of the scissor fork assembly are within the range of single-handed operation. In this way, the surgical incision retractor of the above technical measures effectively integrates two retractor assemblies that can be operated synchronously, enabling a single person to perform the synchronous expansion / closing operation of the two retractor assemblies with one hand, and the relative angle between the two retractors remains unchanged during operation. The overall molded structure has the technical characteristics of simple structure, light weight, flexibility, ease of use, and good operating comfort. When used in clinical surgical operations, it is as light and flexible as a general handheld medical device, and basically does not hinder the responsiveness and maneuverability of the surgical operation, which is conducive to ensuring convenient and flexible surgical operations.

[0059] Compared with the traditional L-shaped surgical incision retractor, the above-mentioned technical measures effectively integrate two groups of retractor components that enable the retractors to move away from each other / towards each other in the same operating structure. The synchronous tensioning and supporting operation of the tissues on both sides of the surgical incision can be performed by one person with one hand, without the need for two-person collaboration, thus saving labor costs; moreover, the scissors-fork component serves as a force transmission structure for the two groups of retractor components to open, which can enable the retractors of the two groups of retractor components to move away from each other in a basically balanced manner along the midline, thereby realizing that the tissues on both sides of the surgical incision are basically symmetrically pulled apart with the midline of the incision as the axis, which is conducive to continuing to cut the tissue layer by layer along the midline of the incision, and basically ensuring that the incision does not deviate from the midline and become skewed.

[0060] Compared with the technologies of publication numbers CN 116058895 A and CN 116725591 A, the above-mentioned technical measures form a lightweight handheld operation with a small and compact structure, without the need for an operating table as a support carrier. The overall molded structure has the technical characteristics of simple structure, lightness and flexibility, ease of use, and good operating comfort. It is particularly suitable for use scenarios that require continuous adjustment of the traction depth and width, such as traction during tissue incision.

[0061] Compared with the technologies of publication numbers CN 201320197 Y, CN 203914979 U, and CN 202235500 U, the above-mentioned technical measures maintain a relative angle between the two sets of retractors during the tensioning operation. In this case, the direction of the force exerted by the retractors on the pulled tissue remains basically unchanged, and the angle of the pulled tissue relative to the midline of the incision remains basically unchanged, so that the incision cross-section is basically rectangular, exposing the midline of the incision to the greatest extent, which is conducive to continuing to cut the tissue layer by layer along the midline of the incision and ensuring that the incision does not deviate from the midline and become skewed. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 It is a structural schematic diagram of the present invention.

[0063] Figure 2 for Figure 1 A partial enlarged view of the .

[0064] Figure 3 for Figure 2 Bottom view of .

[0065] Figure 4 for Figure 3 Right view of .

[0066] Figure 5 for Figure 1 Cross-section view at AA in the figure.

[0067] Figure 6 for Figure 1 Cross-sectional view at BB in the figure.

[0068] Figure 7 for Figure 1 Cross-sectional view at CC in .

[0069] Figure 8 for Figure 1 Cross-sectional view at DD in .

[0070] Figure 9 This is another structural diagram of the present invention.

[0071] Figure 10 for Figure 9 A partial enlarged view of the .

[0072] Meanings of the codes in the figure: 1—first hook assembly; 11—first traction rod; 12—first hook; 13—first base plate; 14—first incision construction surface; 15—first vertical folding edge; 16—first incision tensioning surface; 17—first horizontal folding edge; 18—positioning guide rod; 2—second hook assembly; 21—second traction rod; 22—second hook; 23—second base plate; 24—second cutout construction surface; 25—second vertical folding edge; 26—second cutout tensioning surface; 27—second horizontal folding edge; 28—third through-rod hole; 29—locking screw; 210—fourth through-rod hole; 3 - gripping handle; 31 - first rod hole; 32 - second rod hole; 33 - first slide groove; 34 - gripping handle half; 35 - first locking bolt; 4—Scissor assembly; 41—First scissor rod; 42—Second scissor rod; 43—Stretching force handle; 44—Second slide; 45—First roller; 46—Second roller; 47—Traction spring; 48—Force handle half; 49—Second locking bolt; 410—First hinge; 411—Second hinge; 412—Third hinge; 413—Fourth hinge; 414—Fifth hinge. DETAILED DESCRIPTION

[0073] The present invention relates to the field of medical device technology, specifically a handheld surgical incision retractor that integrates two sets of retractor components that operate synchronously. The main technical solution of the present invention is described in detail below with reference to multiple embodiments. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 The technical solution of the present invention is clearly and in detail explained; Example 12 is combined with the accompanying drawings of the specification - that is Figure 9 and Figure 10 The technical solution of the present invention is explained clearly and in detail; although other embodiments are not separately drawn in the drawings, their main structures can still refer to the drawings of Example 1 or Example 12.

[0074] It should be noted that the drawings of the present invention are schematic and have been simplified to clarify the technical objectives of the present invention and to avoid obscuring the present invention's contribution to the prior art. Furthermore, expressions such as "approximately" and "substantially" regarding quantities or fitting relationships below are intended to allow for reasonable assembly and processing errors within the industry and do not literally represent absolute quantities or fitting relationships.

[0075] Example 1 See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 As shown, the present invention is a handheld surgical incision retractor for tensioning and supporting the surgical incision during clinical surgical operations, which includes a first retractor assembly 1, a second retractor assembly 2, a gripping handle 3 and a scissor fork assembly 4. The first retractor assembly 1 and the second retractor assembly 2 cooperate to tension and support the surgical incision so that the lower tissue of the surgical incision is exposed. The first retractor assembly 1 and the second retractor assembly 2 are integrated and arranged at the gripping handle 3. The first retractor assembly 1 and the second retractor assembly 2 at the gripping handle 3 are connected to the scissor fork assembly 4. The scissor fork assembly 4 drives the tensioning and stretching action of the first retractor assembly 1 and the second retractor assembly 2 at the gripping handle 3, thereby synchronously driving the first retractor assembly 1 and the second retractor assembly 2 at the gripping handle 3.

[0076] Specifically, the first hook assembly 1 includes a first traction rod 11 and a first hook 12 .

[0077] One end of the first traction rod 11 is connected to the top of the first retractor hook 12, and the two are matched in a nearly L-shaped bending structure. The other end of the first traction rod 11 is used to mate with the gripping handle 3 and the scissor assembly 4. Due to the following installation structure within the gripping handle 3, the end of the first traction rod 11 away from the first retractor hook 12 has a U-shaped return structure.

[0078] During surgery, the first retractor 12 needs to extend into the surgical incision to tension and support the human tissue at the surgical incision in the direction of movement to create an exposed incision area. Therefore, the first retractor 12 has a flat first base plate 13. The surface of the first base plate 13 that extends along the first traction rod 11 (due to the curved structure of the first traction rod 11, for clarity, only the first traction rod connected to the first base plate 13 is referred to) serves as the surface for tensioning and supporting human tissue—i.e., the first incision tensioning surface 16. The surface of the first base plate 13 that faces away from the first traction rod 11 (i.e., the surface opposite the first incision tensioning surface 16) serves as the surface for window-like exposure of the incision area—i.e., the first incision construction surface 14.

[0079] To ensure stable construction of the exposed surgical incision area and reduce interference with the human tissue at both ends of the incision after tensioning, first vertical folds 15 are formed on both sides of the width of the first substrate 13, protruding toward the first incision construction surface 14. The transition between each first vertical fold 15 and the first substrate 13 is a smooth curved transition structure without sharp edges, and the edges of each first vertical fold 15 are smoothly rounded without sharp edges. In order to maximize the exposed area of ​​the surgical incision and better conform to the deformation of the straight incision being stretched and supported, the first vertical folds 15 on both sides of the width direction of the first base plate 13 are respectively matched with obtuse-angle flaring structures, that is, each first vertical fold 15 is matched with the first base plate 13 at an obtuse angle, and the effective width of the first base plate 13 itself should be less than the longitudinal length between the two ends of the straight incision. In this way, when the first retractor 12 is inserted into the surgical incision, the first base plate 13 is basically in the middle area of ​​the current tensioning direction, and the first vertical folds 15 on both sides are close to the two ends of the surgical incision. Of course, the protrusion size of the aforementioned first vertical fold 15 is generally a protrusion in the form of a curling structure, and it is not advisable to be too high. A too high protrusion will directly affect the insertion operation of the first retractor 12 into the surgical incision.

[0080] To ensure a stable construction of the exposed surgical incision area and minimize interference with the underlying tissue, a first transverse fold 17 is formed at the bottom of the first base plate 13 in the vertical direction, folding toward the first tensioning surface 16. The fold 17 bends in the opposite direction to the first vertical fold 15. The transition between the first transverse fold 17 and the first base plate 13 is a smooth, curved transition with no sharp corners, and the edges of the first transverse fold 17 are smoothly rounded with no sharp corners. To accommodate the layer-by-layer incision process and maximize the exposed surgical incision area, the first transverse fold 17 and the first base plate 13 are aligned at an obtuse angle. The raised dimensions of the first transverse fold 17 are typically sufficient, with a curled edge structure, and should not be excessively high. Excessive height would directly impede the insertion of the first retractor 12 into the surgical incision and affect the tensioning support bearing portion of the surgical incision.

[0081] It can be seen that the forming structure of the above-mentioned first hook 12 is based on the first substrate 13, and a curling structure that is bent and protruded toward the first incision construction surface 14 is formed at the two side edges in the width direction, and a curling structure that is bent and protruded toward the first incision tensioning surface 16 is formed at the bottom in the height direction.

[0082] In the second hook assembly 2 , except that the second traction rod 21 is significantly different from the first traction rod 11 , the molding structure of the second hook 22 is substantially the same as that of the first hook 12 , as described in detail below.

[0083] The second hook assembly 2 includes a second traction rod 21 and a second hook 22 .

[0084] One end of the second traction rod 21 is connected to the top of the second retractor 22, and the two are matched with an approximately L-shaped bending structure. The other end of the second traction rod 21 is used to match the gripping handle 3 and the scissor assembly 4. Based on the following insertion structure in the gripping handle 3, the end of the second traction rod 21 away from the second retractor 22 is a straight rod structure. However, since in the following matching structure, the arrangement position of the second retractor 22 is farther away from the gripping handle 3 than the first retractor 12, and is aligned with the first retractor 12, and since the second traction rod 21 should not directly cross over the top of the matching position of the first and second retractor 12, which will affect the progress of the surgical operation, the middle part of the second traction rod 21 to the area close to the second retractor 22 has a U-shaped bending clearance structure. The bending position of the second traction rod 21 in the middle should ensure that the first and second retractor 12 do not interfere with each other when they are stretched to the maximum position, that is, the bending clearance structure is in the first The bending position in the middle of the second traction rod 21 does not collide with the first hook 12; the bending and giving way structure in the second traction rod 21 is close to the bending position of the second hook 22, which should ensure that the second traction rod 21 is connected to the second hook 22 at the second incision tensioning surface 26 of the second hook 22; the U-shaped space formed by the bending and giving way structure should bypass half the width of the first hook 12 and the second hook 12 at the location, ensuring that the first hook 12 and the second hook 22 do not interfere with each other in position when they are stretched to the maximum position, and ensuring that the incision exposure area constructed by the tensioning support of the first hook 12 and the second hook 22 has no interference with the traction rod in the top view direction.

[0085] During surgery, the second retractor 22 needs to extend into the surgical incision to tension and support the human tissue at the surgical incision in the direction of movement to create an exposed incision area. Therefore, the second retractor 22 has a flat second base plate 23. The surface of the second base plate 23 that extends along the second traction rod 21 (due to the curved structure of the second traction rod 21, for clarity, only the second traction rod connected to the second base plate 23 is referred to) serves as the surface for tensioning and supporting human tissue—i.e., the second incision tensioning surface 26. The surface of the second base plate 23 that faces away from the second traction rod 21 (i.e., the surface opposite the second incision tensioning surface 26) serves as the surface for window-like exposure of the incision area—i.e., the second incision construction surface 24.

[0086] To ensure stable construction of the surgical incision exposure area and reduce interference with the human tissue at both ends of the incision after tensioning, second vertical folds 25 are formed on both sides of the width of the second substrate 23, protruding toward the second incision construction surface 24. The transition between each second vertical fold 25 and the second substrate 23 is a smooth curved transition structure without sharp edges, and the edges of each second vertical fold 25 are smoothly rounded without sharp edges. To maximize the exposed area of ​​the surgical incision and better conform to the deformation of the linear incision being stretched and supported, the second vertical folds 25 on the widthwise edges of the second base plate 23 are each fitted with an obtuse-angled flaring structure. That is, each second vertical fold 25 is fitted with the second base plate 23 at an obtuse angle, and the effective width of the second base plate 23 itself should be less than the longitudinal length between the two ends of the linear incision. In this way, when the second retractor 22 is inserted into the surgical incision, the second base plate 23 is essentially in the middle area of ​​the current tensioning direction, and the second vertical folds 25 on both sides are close to the two ends of the surgical incision. Of course, the protrusion size of the aforementioned second vertical folds 25 is generally sufficient as a curling structure, and should not be too high, as such a high protrusion will directly affect the insertion operation of the second retractor 22 into the surgical incision.

[0087] To ensure a stable construction of the exposed surgical incision area and minimize interference with the underlying tissue, a second transverse fold 27 is formed at the bottom of the second base plate 23 in the vertical direction, folding toward the second incision tensioning surface 26. The fold 27 bends in the opposite direction to the second vertical fold 25. The transition between the second transverse fold 27 and the second base plate 23 is a smooth, curved transition without sharp corners, and the edges of the second transverse fold 27 are smoothly rounded without sharp corners. To accommodate the layer-by-layer incision process and maximize the exposed surgical incision area, the second transverse fold 27 and the second base plate 23 are aligned at an obtuse angle. The raised dimensions of the second transverse fold 27 are typically sufficient, with a curled edge structure, and should not be excessively high. Excessive height would directly impede the insertion of the second retractor 22 into the surgical incision and affect the tensioning support portion of the surgical incision.

[0088] It can be seen that the forming structure of the above-mentioned second hook 22 is based on the second substrate 23, and a curling structure that is bent and protruded toward the second incision construction surface 24 is formed at the two side edges in the width direction, and a curling structure that is bent and protruded toward the second incision tensioning surface 26 is formed at the bottom in the height direction.

[0089] The first hook assembly 1 and the second hook assembly 2 of the above structure form a left-right matching relationship between the first hook 12 and the second hook 22 in the following assembly structure with the gripping handle 3, so the first hook 12 and the second hook 22 of the above structure basically form a left-right symmetrical structure.

[0090] The gripping handle 3 is used to receive the first traction rod 11 of the first retractor assembly 1 and the second traction rod 21 of the second retractor assembly 2. Therefore, a first rod insertion hole 31 for receiving the first traction rod 11 and a second rod insertion hole 32 for receiving the second traction rod 21 are formed inside the gripping handle 3. The gripping handle 3 comprises two circumferentially joined gripping handle halves 34. The end surface of each gripping handle half 34 is semicircular. The two gripping handle halves 34 are circumferentially joined at a center plane and are circumferentially secured to form a single unit by a plurality of first locking bolts 35 extending through the center plane. A first through-rod hole 31, a second through-rod hole 32 and a first slide groove 33 are formed on the docking center dividing surface of the two gripping handle halves 34. The first through-rod hole 31 and the second through-rod hole 32 are independently formed in the gripping handle 3. The first through-rod hole 31 and the second through-rod hole 32 are respectively through-hole structures formed along the axial direction of the gripping handle 3; the first slide groove 33 is formed on the side wall of the gripping handle 3 at the second through-rod hole 32 (i.e., the center dividing surface near the second through-rod hole 32), the inner side of which is connected to the second through-rod hole 32, and the outer side forms an open structure at the corresponding side wall of the gripping handle 3, and the two ends of the first slide groove 33 are closed structures at the corresponding ends of the gripping handle 3, that is, the first slide groove 33 is similar to the waist-shaped hole structure formed on the side wall of the gripping handle 3.

[0091] The first traction rod 11 of the first hook assembly 1 is movably installed in the first rod hole 31 of the gripping handle 3. Figure 1 As shown, the right end of the first traction rod 11 extends from the right end of the gripping handle 3, and the connected first hook 12 is located at the right end of the gripping handle 3. The U-shaped bend section of the first traction rod 11 is located at the left end of the gripping handle 3, and the U-shaped bend section of the first traction rod 11 is away from the first hook 12 on the gripping handle 3. Moreover, in order to cooperate with the second traction rod 21 and the scissors assembly 4 to achieve the following connection, the distal straight section of the U-shaped bend structure of the first traction rod 11 is movably installed at the left end of the second rod hole 32 of the gripping handle 3. It can be seen that the main part of the first traction rod 11 is installed in the first rod hole 31 of the gripping handle 3, but in order to cooperate with the second traction rod 21 and the scissors assembly 4, its end away from the first hook 12 is a U-shaped bend structure, and the tail section of the U-shaped bend structure, which is basically parallel to the main part, is folded back and installed in the second rod hole 32 of the gripping handle 3.

[0092] The second traction rod 21 of the second hook assembly 2 is movably installed in the second rod hole 32 of the gripping handle 3. Figure 1As shown, the right end of the second traction rod 21 extends from the right end of the gripping handle 3, and the connected second hook 22 is located at the right end of the gripping handle 3; the left end of the second traction rod 21 is in the second through-rod hole 32 of the gripping handle 3, forming an interrupted spacing fit with the folded end of the first traction rod 11, that is, the end of the first traction rod 11 and the end of the second traction rod 21 are matched facing each other in the second through-rod hole 32 of the gripping handle 3.

[0093] like Figure 1 As shown, the first retractor rod 11 of the first retractor assembly 1 and the second retractor rod 21 of the second retractor assembly 2 extend from the right end of the gripping handle 3, i.e., they extend in the same direction. Because the first retractor 12 of the first retractor assembly 1 and the second retractor 22 of the second retractor assembly 2 need to move away from each other during surgery, the second retractor 22 connected to the second retractor rod 21 is required to cross over the first retractor 12 connected to the first retractor rod 11 via a U-shaped bend to allow for movement. This allows the second retractor 22 connected to the second retractor rod 21 to be positioned farther from the gripping handle 3 than the first retractor 12. This U-shaped bend on the second retractor rod 21 allows the second retractor 22 to align with the first retractor 12 in the left-right direction, with the first notch surface 14 of the first retractor 12 and the second notch surface 24 of the second retractor 22 facing each other on the outside of the gripping handle 3.

[0094] In the above-described assembly structure, the portion of the second traction rod 21 extending beyond the gripping handle 3 crosses over the first retractor hook 12 via a U-shaped bent clearance structure and is located on the side of the first retractor hook 12 away from the gripping handle 3, i.e., adjacent to the first notch surface 14. To enhance the structural strength of the fit between the second traction rod 21 and the first traction rod 11, and to lock the relative position of the second retractor hook 22 and the first retractor hook 12, which move in opposite directions, the U-shaped bent clearance structure of the second traction rod 21 is positioned in an interlocking manner with the portion of the first traction rod 11 extending beyond the gripping handle 3. A third rod insertion hole 28 is formed in the U-shaped bent clearance structure of the second traction rod 21 at this interlocking position, through which the first traction rod 11 can flexibly pass. That is to say, the first traction rod 11 extends out of the gripping handle 3 and axially passes through the third through-rod hole 28 of the second traction rod 21 at the bent and yielding structure. The cross-penetration structure of the two forms a positioning fulcrum, which is beneficial to enhance the structural strength of them extending out of the gripping handle 3, and can also form a locking positioning structure between the two through the third through-rod hole 28.

[0095] like Figure 5As shown, a locking screw 29 is connected to the second draw rod 21 and screwed into the third through-rod hole 28. When the locking screw 29 is screwed out of the third through-rod hole 28, the first draw rod 11 is freely inserted into the third through-rod hole 28, thereby loosening the first draw rod 11 inserted into the third through-rod hole 28. When the locking screw 29 is screwed into the third through-rod hole 28, the first draw rod 11 is restricted from being inserted into the third through-rod hole 28, thereby tightening the first draw rod 11 inserted into the third through-rod hole 28, thereby maintaining the relative position of the first draw rod 11 and the second draw rod 21, thereby securing the relative position of the first hook 12 and the second hook 22. To enhance the secure grip of the locking screw 29 on the first draw rod 11, several friction-enhancing bumps are formed in the area where the first draw rod 11 moves through the third through-rod hole 28. To enhance operational flexibility, the locking screw 29 is a butterfly bolt.

[0096] The scissor assembly 4 is a scissor-type structure, comprising a first scissor rod 41 , a second scissor rod 42 , a spreading force application handle 43 and a traction spring 47 .

[0097] More specifically, the middle portions of the first scissor rod 41 and the second scissor rod 42 of the scissor assembly 4 are hinged together via a first hinge shaft 410, and the first scissor rod 41 and the second scissor rod 42 can open / close around the first hinge shaft 410. The scissor assembly 4 serves as an operating mechanism that drives the first retractor assembly 1 and the second retractor assembly 2 to perform tensioning / closing actions at the gripping handle 3. The scissor assembly 4 has a joint end and a force-applying end. The joint end is used to be hinged to the first traction rod 11 and the second traction rod 21 at the gripping handle 3, and the force-applying end is used to apply a torque to open the scissor assembly 4. The joint end and the force-applying end are located at opposite ends of the scissor assembly 4.

[0098] The joint end of the first scissor lever 41 extends into the gripping handle 3 through the first slot 33 of the gripping handle 3 and is hinged to the end of the first traction rod 11 inserted into the second rod hole 32 via the second hinge shaft 411. That is, the joint end of the first scissor lever 41 is hinged to the end of the first traction rod 11 in the gripping handle 3. The joint end of the second scissor lever 42 extends into the gripping handle 3 through the first slot 33 of the gripping handle 3 and is hinged to the end of the second traction rod 21 inserted into the second rod hole 32 via the fourth hinge shaft 413. That is, the joint end of the second scissor lever 42 is hinged to the end of the second traction rod 21 in the gripping handle 3.

[0099] The force-applying end of the scissor assembly 4 extends away from the gripping handle 3. Of course, the extension should place the force-applying end of the scissor assembly 4 and the gripping handle 3 within the one-hand gripping range of an average adult, so as to achieve single-handed operation by one person.

[0100] The force-applying handle 43 is used to apply force to squeeze the first and second scissor rods 41 and 42. Therefore, a slide groove, i.e., a second slide groove 44, is formed inside the force-applying handle 43 for the sliding assembly of the force-applying ends of the first and second scissor rods 41 and 42. The force-applying handle 43 comprises two force-applying handle halves 48 that are circumferentially butted together. The end face of each force-applying handle half 48 is semicircular. The two force-applying handle halves 48 are circumferentially butted together via a center dividing surface and are circumferentially fixed to form a single structure by a plurality of second locking bolts 49 that pass through the center dividing surface. A second slide groove 44 is formed on the center dividing surface of the two force-applying handle halves 48. The second slide groove 44 is formed on the side wall of the force-applying handle 43 (i.e., at the center dividing surface). In order to ensure the stability of the assembly between the force-applying handle 43 and the first scissors rod 41 and the second scissors rod 42, the second slide groove 44 is a special-shaped structure with an internal width greater than the width of the opening. The two ends of the second slide groove 44 are closed structures at the corresponding ends of the force-applying handle 43. That is to say, the second slide groove 44 is similar to the waist-shaped hole structure formed on the side wall of the force-applying handle 43.

[0101] The force-applying end of the first scissor lever 41 extends into the open force-applying handle 43 through the opening of the second chute 44. The force-applying end of the first scissor lever 41 is hinged to the first roller 45 via the third hinge shaft 412. The force-applying end of the first scissor lever 41 is slidably assembled in the second chute 44 of the open force-applying handle 43 via the first roller 45.

[0102] The force-applying end of the second scissor rod 42 is hingedly connected to the second roller 46 via the fifth hinge shaft 414. The force-applying end of the second scissor rod 42 is slidably assembled in the second slot 44 of the opening force-applying handle 43 via the second roller 46. Thus, when an opening torque is applied by the opening force-applying handle 43, the opening force-applying handle 43 moves toward the gripping handle 3. Driven by the first roller 45 and the second roller 46, the first scissor rod 41 and the second scissor rod 42 smoothly and effortlessly move away from each other in the second slot 44 of the opening force-applying handle 43. This in turn drives the first traction rod 11 of the first retractor assembly 1 and the second traction rod 21 of the second retractor assembly 2 to move away from each other in the second rod hole 32 of the gripping handle 3. Simultaneously, the first retractor 12 of the first retractor assembly 1 and the second retractor 22 of the second retractor assembly 2 move away from each other outside the gripping handle 3, thereby achieving tension support for the surgical incision. Corresponding to the aforementioned force application operation, the grip handle 3 is usually located in the palm, and the force application handle 43 is stretched out to be within the range of finger operation (especially gripping).

[0103] It can be seen from the above operation process that when the force-applying end of the first scissors rod 41 and the force-applying end of the second scissors rod 42 of the scissors assembly 4 are approaching, the first hook 12 of the first hook assembly 1 and the second hook 22 of the second hook assembly 2 are driven to move toward each other and approach and close; when the force-applying end of the first scissors rod 41 and the force-applying end of the second scissors rod 42 are separating, the first hook 12 of the first hook assembly 1 and the second hook 22 of the second hook assembly 2 are driven to move away from each other and widen the fitting distance.

[0104] The traction spring 47 is a coil spring structure connected between the first traction rod 11 and the second traction rod 21 within the gripping handle 3, specifically within the second through-rod hole 32 of the gripping handle 3. It serves to pull the first and second traction rods 11 and 21 in the opposite direction. Thus, when the force-applying end of the scissors assembly 4 is not applying torque toward the gripping handle 3, the ends of the first and second traction rods 11 and 21, under the traction of the traction spring 47, move toward each other within the second through-rod hole 32 of the gripping handle 3. Correspondingly, the first hook 12 of the first hook assembly 1 and the second hook 22 of the second hook assembly 2 move toward each other. Compared to a scissors assembly 4 without the traction spring 47, the first and second hooks 12 and 22 do not need to rely on the force-applying end applying torque away from the gripping handle 3 to close. Instead, they automatically return to their original position based on the spring force of the traction spring 47. Of course, the opening torque applied by the force-applying end of the scissors assembly 4 also requires the traction spring 47 to be stretched, thus extending the tension.

[0105] The embodiment with the above structure is a preferred embodiment for implementing the present invention. In addition to adopting this embodiment to implement the present invention, the following transformation structures can also be adopted to implement the present invention.

[0106] Example 2 The rest of this embodiment is the same as that of embodiment 1, except that: The second traction rod of the second hook assembly does not have positional interaction with the first traction rod of the first hook assembly after being assembled on the gripping handle. Figure 1 The U-shaped bent yield structure shown is a structure that is wound around the top, and the U-shaped bent yield structure of the second traction rod is wound around at the bottom. In this way, the U-shaped bent yield structure of the second traction rod is only a yield and wound around, and does not cause positional interference with the first traction rod. There is no need for a third through-rod hole and a locking screw. The third through-rod hole and the locking screw are removed in this embodiment.

[0107] Example 3 The rest of this embodiment is the same as that of embodiment 1 or embodiment 2, except that: The end portion of the first traction rod of the first hook assembly at the gripping handle is bent and extended at the first sliding groove of the gripping handle; The end portion of the second traction rod of the second hook assembly at the gripping handle is bent and extended at the first sliding groove of the gripping handle; The joint ends of the first scissor rod and the second scissor rod of the scissor assembly are hinged to corresponding traction rods outside the gripping handle, and the traction spring of the scissor assembly is arranged outside the gripping handle.

[0108] Example 4 The rest of this embodiment is the same as that of embodiment 3, except that: The traction spring of the scissor fork assembly is arranged in the second rod hole of the gripping handle, and is connected and pulled at the end bends of the first traction rod and the second traction rod.

[0109] Example 5 The rest of this embodiment is the same as that of embodiment 1 or embodiment 3, except that: Eliminate the traction spring of the scissor assembly.

[0110] The removal of the traction spring of the scissor lift assembly eliminates the automatic reset function, so that a torque opposite to the gripping handle needs to be applied to the force-applying end of the scissor lift assembly during reset.

[0111] Example 6 The rest of this embodiment is the same as that of embodiment 1, except that: Eliminate the force-applying handle of the scissor assembly; The first and second scissor rod force-applying ends of the scissor assembly are respectively formed with structures that can be pinched by fingers, such as a circular buckle or an arc-shaped buckle handle similar to a pair of scissors, and each buckle / handle is for one or two fingers to press and apply force.

[0112] Example 7 The rest of this embodiment is the same as that of embodiment 1, except that: The locking bolt of the grip handle is replaced by a locking nut; That is, thread structures are formed at both ends of the two halves of the gripping handle, and the two halves, which are circumferentially butted together, are fixed into an integral structure by locking nuts at both ends.

[0113] The force-applying handle can be formed with the same structure.

[0114] Example 8 The rest of this embodiment is the same as that of embodiment 1, except that: The traction rod of the first hook assembly is connected to the middle of the first hook in the height direction, and the two form a T-shaped bending structure.

[0115] The second hook assembly can be formed with the same structure.

[0116] Example 9 The rest of this embodiment is the same as that of embodiment 1, except that: The force-applying handle is an integrated structure; A concave sliding groove is formed at the front and rear sides of the force-applying handle relative to the force-applying direction; A Y-shaped bifurcated structure is formed at the force-applying end of the first scissor rod. The bifurcated structure straddles the force-applying handle and is connected to rollers respectively. The rollers on both sides are correspondingly embedded in the front and rear sliding grooves of the force-applying handle. A Y-shaped bifurcated structure is formed at the force-applying end of the second scissor rod. The bifurcated structure straddles the force-applying handle and is connected to rollers respectively. The rollers on both sides are correspondingly embedded in the front and rear sliding grooves of the force-applying handle.

[0117] Example 10 The rest of this embodiment is the same as that of embodiment 1, except that: The first transverse fold on the first draw hook is cancelled, and of course, the corresponding function is eliminated; The same applies to the second hook.

[0118] Example 11 The rest of this embodiment is the same as that of embodiment 1, except that: Cancel the first vertical fold on the first draw hook, and of course, the corresponding function is eliminated; The same applies to the second hook.

[0119] Example 12 In this embodiment, the structure of the first retractor is the same as that of the first retractor in Example 1, the structure of the second retractor is the same as that of the second retractor in Example 1, and the structure of the scissor assembly is the same as that of the scissor assembly in Example 1. The differences lie in the molding and matching structure of the first and second traction rods, as well as the assembly structure of the first and second traction rods in the gripping handle.

[0120] For details, see Figure 9 and Figure 10 As shown, the present invention is a handheld surgical incision retractor for tensioning and supporting the surgical incision during clinical surgical operations, which includes a first retractor assembly 1, a second retractor assembly 2, a gripping handle 3 and a scissor fork assembly 4. The first retractor assembly 1 and the second retractor assembly 2 cooperate to tension and support the surgical incision so that the lower tissue of the surgical incision is exposed. The first retractor assembly 1 and the second retractor assembly 2 are integrated and arranged at the gripping handle 3. The first retractor assembly 1 and the second retractor assembly 2 at the gripping handle 3 are connected to the scissor fork assembly 4. The scissor fork assembly 4 drives the tensioning and stretching action of the first retractor assembly 1 and the second retractor assembly 2 at the gripping handle 3, thereby synchronously driving the first retractor assembly 1 and the second retractor assembly 2 at the gripping handle 3.

[0121] The first hook assembly 1 comprises a first traction rod 11 and a first hook 12 .

[0122] The first traction rod 11 has a multi-step bending structure. One end of the first traction rod 11 is connected to the top of the first retractor hook 12, and the two are matched in a nearly L-shaped bending structure. The other end of the first traction rod 11 is used to mate with the gripping handle 3 and the scissor assembly 4. Due to the following installation structure within the gripping handle 3, the end of the first traction rod 11 away from the first retractor hook 12 has an L-shaped bending structure.

[0123] The second hook assembly 2 includes a second traction rod 21 and a second hook 22 .

[0124] The second traction rod 21 has a multi-step bending structure. One end of the second traction rod 21 is connected to the top of the second retractor hook 22, and the two are matched in a nearly L-shaped bending structure. The other end of the second traction rod 21 is used to mate with the gripping handle 3 and the scissor assembly 4. Due to the following installation structure within the gripping handle 3, the end of the second traction rod 21 away from the second retractor hook 22 has an L-shaped bending structure.

[0125] The first traction rod 11 and the second traction rod 21 are basically bilaterally symmetrical structures except for the positioning and locking structure described below.

[0126] The first hook assembly 1 and the second hook assembly 2 of the above structure form a left-right matching relationship between the first hook 12 and the second hook 22 in the following assembly structure with the gripping handle 3, so the first hook 12 and the second hook 22 of the above structure basically form a left-right symmetrical structure.

[0127] The gripping handle 3 is used to receive the first traction rod 11 of the first retractor assembly 1 and the second traction rod 21 of the second retractor assembly 2. Therefore, a first rod insertion hole 31 for receiving the first traction rod 11 and a second rod insertion hole 32 for receiving the second traction rod 21 are formed inside the gripping handle 3. The gripping handle 3 comprises two circumferentially joined gripping handle halves, each of which has a semicircular end surface. The two gripping handle halves are circumferentially joined at a center plane and circumferentially secured to form a single unit by a plurality of first locking bolts 35 extending through the center plane. A first rod penetration hole 31, a second rod penetration hole 32 and a first slide groove 33 are formed on the docking center dividing surface of the two gripping handle halves. The first rod penetration hole 31 and the second rod penetration hole 32 are basically formed in a coaxial structure in the gripping handle 3. The reason for distinguishing the first rod penetration hole 31 and the second rod penetration hole 32 of the coaxial structure is because it corresponds to the installation positions of the first traction rod 11 and the second traction rod 21; the first slide groove 33 is formed on the side wall at the middle of the rod penetration hole of the aforementioned coaxial structure, that is, in the middle of the center dividing surface of the rod penetration hole of the coaxial structure. The inner side of the first slide groove 33 is connected with the rod penetration hole of the coaxial structure, and the outer side forms an open structure at the corresponding side wall of the gripping handle 3. The two ends of the first slide groove 33 are closed structures at the corresponding ends of the gripping handle 3, that is, the first slide groove 33 is similar to the waist-shaped hole structure formed on the side wall of the gripping handle 3.

[0128] The first traction rod 11 of the first hook assembly 1 is movably installed in the first rod hole 31 of the gripping handle 3. Figure 9 As shown, the portion of the first traction rod 11 extending out of the gripping handle 3 is located on one side of the gripping handle 3 in a multi-step inward bending structure. In this embodiment, it is bent along the position of the scissors assembly 4, so that the connected first pull hook 12 is finally located on one side of the gripping handle 3.

[0129] The second traction rod 21 of the second hook assembly 2 is movably installed in the second rod hole 32 of the gripping handle 3. Figure 9 As shown, the portion of the second traction rod 21 extending out of the gripping handle 3 is located on one side of the gripping handle 3 in a multi-step inward bending structure. In this embodiment, it is bent along the position of the scissors assembly 4, so that the connected second hook 22 is finally located on one side of the gripping handle 3. Of course, it should be paired with the above-mentioned first hook assembly 1.

[0130] The multi-step bending structure of the first traction rod 11 and the second traction rod 21 forms a basic bilaterally symmetrical matching structure on the gripping handle 3, so that the first retracting hook 12 and the second retracting hook 22 at the initial position are close to each other.

[0131] In order to improve the structural rigidity of the first traction rod 11 and the second traction rod 21, a positioning guide structure is provided at the bent and close position of the two. Figure 9 and Figure 10As shown, a hollow guide sleeve is provided at the horizontal section where the second drawbar 21 bends toward the first drawbar 11, with a fourth rod insertion hole 210 formed therein. A horizontally projecting positioning guide rod 18 is also provided at the horizontal section where the first drawbar 11 bends toward the second drawbar 21, capable of nesting within the fourth rod insertion hole 210 of the guide sleeve. Under the action of the scissor lift assembly 4, when the first drawbar 11 and the second drawbar 21 are opened and closed, the positioning guide rod 18 on the first drawbar 11 engages in a telescoping linear motion within the fourth rod insertion hole 210 of the second drawbar 21.

[0132] In order to adapt to the relative positioning of the pulled apart position between the first retractor 12 and the second retractor 22 in clinical applications, based on the overlapping relationship between the positioning guide rod 18 and the guide sleeve, a locking screw 29 is connected to the end of the guide sleeve close to the first traction rod 11, that is, a locking positioning structure is formed between the positioning guide rod 18 and the guide sleeve. Figure 10 shown.

[0133] like Figure 10 As shown, a locking screw 29 is connected to the guide sleeve of the second traction rod 21 and is threaded into the fourth through-rod hole 210. When the locking screw 29 is screwed out of the fourth through-rod hole 210, the first traction rod 11 is freely inserted into the fourth through-rod hole 210, thereby loosening the first traction rod 11 inserted into the fourth through-rod hole 210. When the locking screw 29 is screwed into the fourth through-rod hole 210, the first traction rod 11 is restricted from being inserted into the fourth through-rod hole 210, thereby tightening the positioning guide rod 18 of the first traction rod 11 inserted into the fourth through-rod hole 210, thereby maintaining the relative position of the first traction rod 11 and the second traction rod 21 fixed, thereby achieving a fixed relative position between the first retractor 12 and the second retractor 22. Of course, in order to enhance the firmness of the locking screw 29 against the positioning guide rod 18, a number of friction-increasing protrusions are formed in the movable area of ​​the positioning guide rod 18 used for passing through the fourth rod hole 210; in order to improve the flexibility of operation, the locking screw 29 is selected as a dish bolt.

[0134] Compared with Example 1, during the surgical operation, the operator's palm needs to perform abduction and adduction movements with the wrist joint as a fulcrum, making the operation less comfortable than that in Example 1.

[0135] Example 13 The rest of this embodiment is the same as that of embodiment 12, except that: The guide sleeve on the second traction rod is in position exchange with the positioning guide rod on the first traction rod.

[0136] Example 14 The rest of this embodiment is the same as that of embodiment 12, except that: Remove the guide sleeve and positioning guide rod.

[0137] Of course, the function will also be eliminated.

[0138] Example 15 The rest of this embodiment is the same as that of embodiment 12, except that: The first hook assembly and the second hook assembly are arranged on the handle opposite to the scissor assembly, that is, based on the handle, the scissor assembly is on the lower side of the handle, and the first hook assembly and the second hook assembly are arranged on the upper side of the handle.

[0139] The above embodiments are only used to illustrate the present invention, rather than to limit it.

[0140] Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the above embodiments or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the present invention.

Claims

1. A handheld surgical incision retractor for synchronously operating two sets of retractor assemblies, comprising a first retractor assembly (1) and a second retractor assembly (2); The first hook assembly (1) comprises a first traction rod (11) and a first hook (12) connected together and matched with an L-shaped / T-shaped bending structure; The second hook assembly (2) comprises a second traction rod (21) and a second hook (22) connected together and matched with an L-shaped / T-shaped bending structure; Its characteristics are: The surgical incision retractor further comprises a gripping handle (3) and a scissor fork assembly (4); The first traction rod (11) of the first retractor assembly (1) and the second traction rod (21) of the second retractor assembly (2) are installed in the holding handle (3) in a movable structure, the ends of the first traction rod (11) and the second traction rod (21) are disconnected at the holding handle (3), and the first retractor assembly (1) and the second retractor assembly (2) are arranged outside the holding handle (3), and the cutout construction surfaces of the first retractor assembly (12) and the second retractor assembly (22) are matched toward each other outside the holding handle (3); The joint end of the scissor assembly (4) is hinged to the first traction rod (11) and the second traction rod (21) at the gripping handle (3), the force-applying end of the scissor assembly (4) extends away from the gripping handle (3), and the force-applying end of the scissor assembly (4) and the gripping handle (3) are within a single-handed operation range; When a force is applied to the force-applying end of the scissor-fork assembly (4) toward the gripping handle (3), the force-applying end of the scissor-fork assembly (4) moves toward the gripping handle (3), driving the first hook (12) of the first hook assembly (1) and the second hook (22) of the second hook assembly (2) to move in opposite directions.

2. The handheld surgical incision retractor for synchronously operating two retractor assemblies according to claim 1, characterized in that: The scissor assembly (4) comprises a first scissor rod (41) and a second scissor rod (42) hinged together at the middle. The joint end of the first scissor rod (41) is hinged to the end of the first traction rod (11) at the gripping handle (3); The joint end of the second scissor rod (42) is hinged to the end of the second traction rod (21) at the gripping handle (3); The force-applying end of the first scissor rod (41) and the force-applying end of the second scissor rod (42) drive the first hook (12) of the first hook assembly (1) and the second hook (22) of the second hook assembly (2) to move toward each other during the process of approaching each other; During the separation process, the force-applying end of the first scissor rod (41) and the force-applying end of the second scissor rod (42) drive the first hook (12) of the first hook assembly (1) and the second hook (22) of the second hook assembly (2) to move in opposite directions; The force-applying end of the scissor assembly (4) and the gripping handle (3) are within a single-hand gripping range.

3. The handheld surgical incision retractor for synchronously operating two retractor assemblies according to claim 2, characterized in that: The scissor assembly (4) further comprises a force-applying handle (43); The spreading force application handle (43) is assembled on the force application ends of the first scissor rod (41) and the second scissor rod (42) in a sliding structure; When a force is applied to the force-applying end of the scissor assembly (4) toward the gripping handle (3), the first scissor rod (41) and the second scissor rod (42) move away from each other at the position of the force-applying handle (43); and The spreading force application handle (43) is provided with a second sliding groove (44) for sliding assembly of the first scissor rod (41) and the second scissor rod (42); The force-applying end of the first scissor-type rod (41) is hinged to a first roller (45), and the force-applying end of the first scissor-type rod (41) is slidably assembled in the second sliding groove (44) of the open force-applying handle (43) via the first roller (45); The force-applying end of the second scissor-type rod (42) is hinged to a second roller (46), and the force-applying end of the second scissor-type rod (42) is slidably assembled in the second sliding groove (44) of the open force-applying handle (43) via the second roller (46); The force-applying handle (43) has a plurality of force-applying handle halves (48) that are butt-jointed in the circumferential direction, and a second slide groove (44) is formed on the butt-jointed surfaces of the plurality of force-applying handle halves (48); A plurality of force-applying handle halves (48) that are butt-jointed and assembled in the circumferential direction are fixed into an integral structure in the circumferential direction by a locking structure.

4. The handheld surgical incision retractor for synchronously operating two retractor assemblies according to claim 1, 2 or 3, characterized in that: The scissor assembly (4) further comprises a traction spring (47); The traction spring (47) is connected between the first traction rod (11) and the second traction rod (21) at the gripping handle (3) and is used to pull the first traction rod (11) and the second traction rod (21) in the opposite direction. When the force-applying end of the scissor assembly (4) does not apply a force toward the gripping handle (3), the ends of the first traction rod (11) and the second traction rod (21) move toward each other at the gripping handle (3) under the traction action of the traction spring (47); Correspondingly, the first hook (12) of the first hook assembly (1) and the second hook (22) of the second hook assembly (2) move towards each other.

5. The handheld surgical incision retractor for synchronously operating two retractor assemblies according to claim 1 or 2, characterized in that: The ends of the first traction rod (11) and the second traction rod (21) are inserted into the gripping handle (3), and the ends of the first traction rod (11) and the second traction rod (21) are spaced apart and matched in the same rod insertion hole of the gripping handle (3); Correspondingly, the gripping handle (3) has a first sliding groove (33) for the first scissor rod (41) and the second scissor rod (42) of the scissor assembly (4) to pass through and connect to the corresponding traction rod in the corresponding rod penetration hole.

6. The handheld surgical incision retractor for synchronously operating two retractor assemblies according to claim 5, characterized in that: A first rod penetration hole (31) and a second rod penetration hole (32) are formed in the gripping handle (3), which are independent of each other. The first rod penetration hole (31) and the second rod penetration hole (32) are through-hole structures formed along the axial direction of the gripping handle (3). The first traction rod (11) is movably mounted in the first rod hole (31) of the gripping handle (3), and the first traction rod (11) is a U-shaped return bend structure at the end of the gripping handle (3) away from the first retractor (12), and the straight section of the distal end of the U-shaped return bend structure is movably mounted in the second rod hole (32) of the gripping handle (3); The second traction rod (21) is movably mounted in the second rod hole (32) of the gripping handle (3); The end of the first traction rod (11) and the end of the second traction rod (21) are fitted toward each other in the second rod hole (32) of the gripping handle (3); The second pull hook (22) connected to the second pull rod (21) is located on a side of the first pull hook (12) connected to the first pull rod (11) away from the gripping handle (3); A traction spring (47) of the scissor assembly (4) is mounted in the second rod penetration hole (32) of the gripping handle (3); The traction spring (47) is connected between the first traction rod (11) and the second traction rod (21) in the second rod penetration hole (32).

7. The handheld surgical incision retractor for synchronously operating two retractor assemblies according to claim 6, characterized in that: The second traction rod (21) extends out of the gripping handle (3) and has a bent yielding structure, and the second draw hook (22) below the transition of the bent yielding structure forms an aligned fit with the first draw hook (12) at the left and right positions; The bent and yielding structure of the second traction rod (21) is aligned with the position of the first traction rod (11) extending out of the gripping handle (3); The bent and yielding structure of the second traction rod (21) is provided with a third rod-penetrating hole (28) for the first traction rod (11) to movably pass through; The second traction rod (21) is connected to a locking screw (29) that is spirally inserted into the third through-rod hole (28); Unscrewing the locking screw (29) of the third rod-penetrating hole (28) and loosening the first traction rod (11) inserted into the third rod-penetrating hole (28); The locking screw (29) is screwed into the third rod hole (28) to tighten the first traction rod (11) inserted into the third rod hole (28).

8. The handheld surgical incision retractor for synchronously operating two retractor assemblies according to claim 5, characterized in that: The gripping handle (3) comprises a plurality of gripping handle halves (34) butted together in the circumferential direction, and a first sliding groove (33) and a rod-penetrating hole are formed on the butting surfaces of the plurality of gripping handle halves (34); A plurality of gripping handle halves (34) that are butt-jointed in the circumferential direction are fixed into an integral structure in the circumferential direction by a locking structure.

9. The handheld surgical incision retractor for synchronously operating two retractor assemblies according to claim 1, characterized in that: The first hook (12) of the first hook assembly (1) has a first base plate (13); The first substrate (13) has first vertical folding edges (15) at both side edges in the width direction, each convexly formed toward one side of the first incision construction surface (14); The first vertical folded edges (15) of the first substrate (13) on both sides in the width direction are matched with an obtuse-angled flaring structure; The transition between the first vertical folded edge (15) and the first base plate (13) is a smooth curved surface structure; The edge of the first vertical fold (15) is a smooth rounded structure; The first substrate (13) has a first transverse folded edge (17) at the bottom in the height direction, which is bent and convex toward one side of the first incision tensioning surface (16); The first transverse folded edge (17) and the first base plate (13) are matched with each other in an obtuse angle structure; The transition between the first transverse folded edge (17) and the first substrate (13) is a smooth curved surface structure; The edge of the first transverse fold (17) is a smooth rounded structure.

10. The handheld surgical incision retractor for synchronously operating two retractor assemblies according to claim 1, characterized in that: The second hook (22) of the second hook assembly (2) has a second base plate (23); The second substrate (23) has second vertical folding edges (25) at both side edges in the width direction, each convexly formed toward one side of the second incision construction surface (24); The second vertical folds (25) on both side edges of the second substrate (23) in the width direction are matched with an obtuse-angled flaring structure; The transition between the second vertical folded edge (25) and the second base plate (23) is a smooth curved surface structure; The edge of the second vertical fold (25) is a smooth rounded structure; The second base plate (23) has a second transverse folded edge (27) at the bottom in the height direction, which is bent and convex toward one side of the second incision tensioning surface (26); The second transverse folded edge (27) and the second base plate (23) are matched with each other in an obtuse angle structure; The transition between the second transverse folded edge (27) and the second base plate (23) is a smooth curved surface structure; The edge of the second transverse fold (27) is a smooth rounded structure.

Images