Double-end surgical retractor

Abstract

The utility model discloses a double-end surgical retractor which comprises a base, a telescopic sleeve, a telescopic rod, a pull rod and a double-end push rod which are sequentially connected. The base is hinged to the telescopic sleeve, one end of the telescopic rod is adjustably inserted into the telescopic sleeve, and the other end of the telescopic rod is hinged to one end of the pull rod; the double-end push rod comprises a pair of ball heads and a pair of push rods, each ball head is connected with each push rod, the other end of the pull rod is provided with a ball head seat matched with the pair of ball heads, and the double-end push rod and the push rods are hinged through matching of the ball heads and the ball head seat. The position of the drag hook can be adjusted at multiple angles, and the overall length of the drag hook can be adjusted, so that the position of the drag hook reaches an ideal state when a surgeon performs an operation; therefore, the problems of inaccurate distraction degree and poor stability caused by holding the drag hook by hand are avoided; and the double-end drag hook is arranged on the single instrument, so that the purpose of opening a wound is achieved through the double-end drag hook on the single instrument, and a doctor can operate more conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a double-head surgical retractor. Background Art

[0002] When doctors perform laparoscopic, thoracoscopy and other related surgeries, they need to use retractors to open the wound. The existing technology mostly adopts the method of equipping the surgeon with a medical staff member holding a retractor. Due to the limited space on the operating table, the medical staff holding the retractor can easily interfere with the surgeon, and because the medical staff holds the retractor, the degree of retraction has defects such as inaccuracy and poor stability. In addition, even if some hospitals use mechanical retractors instead of retractors held by medical staff, most of them are single-head retractors. If two retractors are needed to open the wound during surgery, two retractor devices need to be prepared at the same time. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a double-head surgical retractor.

[0004] In order to achieve the above object, the utility model provides the following technical solutions:

[0005] The utility model discloses a double-head surgical retractor, comprising a base, a telescopic sleeve, a telescopic rod, a pulling rod and a double-head push rod which are connected in sequence; the base and the telescopic sleeve are hinged, one end of the telescopic rod is adjustably inserted in the telescopic sleeve, and the other end of the telescopic rod is hinged to one end of the pulling rod; the double-head push rod comprises a pair of ball heads and a pair of pushing rods, each ball head is connected to each pushing rod, a ball head seat matching the pair of ball heads is provided at the other end of the pulling rod, and the double-head push rod and the pushing rod are hinged through the cooperation of the ball head and the ball head seat.

[0006] Furthermore, a U-shaped opening that cooperates with the end of the push rod is provided at the end of the telescopic rod, and a locking piece is provided through the two side walls of the U-shaped opening and the end of the push rod; the locking piece includes a screw head, a conical screw and a threaded rod, and a locking knob that is threadedly connected is provided on the threaded rod, and the conical screw is located between the U-shaped openings.

[0007] Furthermore, the pull rod is a hollow rod-like structure, and a push rod is axially arranged inside the pull rod. One end of the push rod is in contact with the conical screw for resistance cooperation, and a double-headed ball cap is provided at the other end of the push rod. The double-headed ball cap is provided with a pair of spherical grooves matching the shape and size of the ball head, and the pair of ball heads are respectively arranged in a pair of spherical grooves.

[0008] Furthermore, a hook piece is provided at the outer end of the push rod, and the hook piece is arranged perpendicular to the push rod and rotates relative to the push rod.

[0009] Furthermore, an external thread, an elastic member, a shaft sleeve, and a fixed sleeve are provided at the end where the telescopic sleeve and the telescopic rod are plugged in; the external thread is circumferentially arranged at the end of the telescopic sleeve, the elastic member and the shaft sleeve are sequentially sleeved on the telescopic rod, and the two ends of the elastic member are respectively resisted and matched with the telescopic sleeve and the shaft sleeve; the elastic member is located in the fixed sleeve, one end of the fixed sleeve is connected with the external thread, and a tapered hole with a gradually decreasing aperture from the inside to the outside is provided on the inner wall of the fixed sleeve near the other end of the fixed sleeve; a through hole is provided on the shaft sleeve near the elastic member, and a spherical ball is provided in the through hole, and the spherical ball contacts and cooperates with the hole wall of the tapered hole and the telescopic rod.

[0010] Furthermore, the outer diameter of the sleeve matches the minimum inner diameter of the fixing sleeve, the outer end of the sleeve away from the elastic member extends to the outside of the fixing sleeve, and an annular lug is circumferentially provided at the outer end of the sleeve.

[0011] Furthermore, a claw-shaped clamping head is provided at one end of the base, and a ball joint matching with the claw-shaped clamping head is provided at one end where the telescopic sleeve is connected to the base.

[0012] Furthermore, a threaded tail locking head is axially provided at the other end of the base, a clamping position is provided in the middle of the base, and the end of the tail locking head extends to the clamping position.

[0013] Furthermore, a clamping rod is movably provided in the base, one end of which is limited in the base and cooperates with the clamping head, and the other end of the clamping rod extends to the clamping position corresponding to the tail locking head.

[0014] The beneficial effects of the utility model are as follows: the utility model can adjust the position of the retractor at multiple angles and adjust the overall length of the retractor through structures such as the base, the telescopic sleeve, the telescopic rod, the pull rod, and the double-headed push rod, so that the position of the retractor reaches the ideal state for the surgeon during surgery; it replaces the hand-held retractor to avoid the problems of inaccurate opening degree and poor stability caused by the hand-held retractor; and a double-headed retractor is arranged on a single instrument, and the purpose of opening the wound is achieved through the double-headed retractor on the single instrument, thereby making it more convenient for the surgeon to perform surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to make the purpose, technical solution and beneficial effects of the utility model clearer, the utility model is described with the following drawings:

[0016] Figure 1 The utility model is a three-dimensional diagram of a double-head surgical retractor.

[0017] Figure 2 for Figure 1 Exploded three-dimensional diagram.

[0018] Figure 3 The utility model is a cross-sectional schematic diagram of a double-head surgical retractor.

[0019] Figure 4 for Figure 3 Magnified view of area A.

[0020] Figure 5 for Figure 3 Magnified view of area B.

[0021] Figure 6 for Figure 3 Magnified view of area C.

[0022] In the figure, 1 is a base, 2 is a telescopic sleeve, 3 is a telescopic rod, 4 is a pull rod, 5 is a double-headed push rod, 50 is a ball head, 51 is a push rod, 40 is a ball head seat, 30 is a U-shaped opening, 31 is a locking piece, 32 is a screw head, 33 is a tapered screw, 34 is a threaded rod, 35 is a locking knob, 41 is a push rod, 42 is a double-headed ball cap, 43 is a spherical groove, 52 is a hook piece, 20 is an external thread, 21 is an elastic piece, 22 is a sleeve, 23 is a fixed sleeve, 24 is a tapered hole, 25 is a sphere, 26 is an annular lug, 10 is a claw-shaped clamping head, 27 is a ball joint, 11 is a tail locking head, 12 is a clamping position, and 13 is a clamping rod. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0024] like Figures 1 to 3 As shown, the utility model is a double-headed surgical retractor, comprising a base 1, a telescopic sleeve 2, a telescopic rod 3, a pull rod 4, and a double-headed push rod 5 connected in sequence. The base 1 is used to clamp and fix the retractor as a whole on an operating table or other mechanism used for positioning. The base 1 and the telescopic sleeve 2 are hinged by a spherical hinge joint, that is, the telescopic sleeve 2 can rotate along multiple axes relative to the base 1, that is, multi-angle adjustment can be achieved. One end of the telescopic rod 3 is positionally adjustable and inserted into the telescopic sleeve 2, that is, the telescopic rod 3 can be extended or retracted relative to the telescopic sleeve 2 to adjust the overall length of the telescopic sleeve 2 and the telescopic rod 3. The other end of the telescopic rod 3 is hinged to one end of the pull rod 4 through a spherical hinge joint to achieve multi-angle adjustment. The double-headed push rod 5 includes a pair of ball heads 50 and a pair of push rods 51. Each ball head 50 is connected to the end of each push rod 51. A ball head seat 40 matching the pair of ball heads 50 is provided at the other end of the pull rod 4. The ball head seat 40 is used to install and limit the ball head 50. The double-headed push rod 5 and the push rod 51 are hinged through the cooperation of the ball head 50 and the ball head seat 40 to form a double ball head pull hook.

[0025] Combination Figure 4As shown, specifically, a U-shaped opening 30 is provided at the end of the telescopic rod 3 to match the end of the push rod 51, and a locking member 31 is provided through the two side walls of the U-shaped opening 30 and the end of the push rod 51. The locking member 31 includes a screw head 32, a tapered screw rod 33 and a threaded rod 34, and a locking knob 35 is provided on the threaded rod 34 in threaded connection. The tapered screw rod 33 is located between the U-shaped openings 30, and the diameter of the tapered screw rod 33 gradually decreases from the screw head 32 to the threaded rod 34. The screw head 32 and the locking knob 35 are respectively located on the outer sides of the two side walls of the U-shaped opening 30.

[0026] The pull rod 4 is a hollow rod-shaped structure, and a push rod 41 is axially arranged inside the pull rod 4. One end of the push rod 41 contacts and resists the tapered screw 33, and a double-headed ball cap 42 is arranged at the other end of the push rod 41. A pair of spherical grooves 43 matching the shape and size of the ball head 50 are arranged on the double-headed ball cap 42, and the pair of ball heads 50 are respectively arranged in the pair of spherical grooves 43. When the locking knob 35 is rotated, the locking knob 35 drives the tapered screw 33 to move, so that the parts of the tapered screw 33 with different outer diameters contact the end of the push rod 41. When the locking member 31 is gradually tightened, the outer diameter of the part of the tapered screw 33 in contact with the push rod 41 will gradually increase, thereby driving the double-headed ball cap 42 at the other end of the push rod 41 to gradually press the ball head 50 of the double-headed push rod 5, so that the pressing force between the ball head 50 and the ball head seat 40 gradually increases, thereby realizing the positioning and fixing between the pull rod 4 and the double-headed push rod 5. That is to say, during use, after the entire pull hook is adjusted to an ideal position, by rotating the locking knob 35, not only the hinge between the pull rod 4 and the telescopic rod 3 can be positioned and fixed, but also the hinge between the double-headed push rod 5 and the pull rod 4 can be positioned and fixed.

[0027] A hook piece 52 is provided at the outer end of the push rod 51. The hook piece 52 is arranged perpendicular to the push rod 51 and can rotate relative to the push rod 51, so as to better adjust the position of the hook to open the wound according to the position of the wound.

[0028] Combination Figure 5As shown, an external thread 20, an elastic member 21, a shaft sleeve 22, and a fixed sleeve 23 are provided at the end where the telescopic sleeve 2 and the telescopic rod 3 are plugged. The external thread 20 is provided near the end of the telescopic sleeve 2 along the circumferential direction, and the elastic member 21 and the shaft sleeve 22 are sequentially sleeved on the telescopic rod 3, and the two ends of the elastic member 21 resist the telescopic sleeve 2 and the shaft sleeve 22 respectively. The fixed sleeve 23 is a tubular structure as a whole, one end of the fixed sleeve 23 is connected with the external thread 20, and a tapered hole 24 with a gradually decreasing aperture from the inside to the outside is provided inside the fixed sleeve 23 near the other end of the fixed sleeve 23, and its cross section is an oblique line, and a through hole is provided on the shaft sleeve 22 near the elastic member 21, and a ball 25 is provided in the through hole. After installation, the elastic member 21 is in a compressed state, the ball 25 contacts and cooperates with the hole wall of the conical hole 24 and the telescopic rod 3, the fixing sleeve 23 limits the elastic member 21 and the shaft sleeve 22, and the elastic member 21 is located in the fixing sleeve 23. In this embodiment, the elastic member 21 is a spring.

[0029] The outer diameter of the sleeve 22 matches the minimum inner diameter of the fixing sleeve 23. The outer end of the sleeve 22 away from the elastic member 21 extends to the outside of the fixing sleeve 23. An annular lug 26 is circumferentially provided at the outer end of the sleeve 22. In the natural state after installation, there is a gap between the annular lug 26 and the end face of the fixing sleeve 23.

[0030] During use, if the length needs to be shortened, it is only necessary to push the telescopic rod 3 inward. When the predetermined position is reached, a certain friction force will be generated between the ball 25 and the hole wall of the tapered hole 24 of the fixed sleeve 23 and the telescopic rod 3 due to the elastic force of the elastic member 21, so it will be automatically locked without sliding. If the length needs to be lengthened, the friction force between the ball 25 and the hole wall of the tapered hole 24 of the fixed sleeve 23 and the telescopic rod 3 will increase when the telescopic rod 3 is pulled outward, making it difficult or impossible to pull out. At this time, it is only necessary to push the shaft sleeve 22 to the side where the fixed sleeve 23 is located through the annular lug 26, and at the same time pull the telescopic rod 3 outward, which is convenient to use and can achieve a better positioning effect.

[0031] Combination Figure 6 As shown, a claw-shaped clamping head 10 is provided at one end of the base 1, and a ball joint 27 cooperating with the claw-shaped clamping head 10 is provided at the end where the telescopic sleeve 2 is connected to the base 1. The spherical hinge between the claw-shaped clamping head 10 and the ball joint 27 is used to realize multi-angle adjustment of the position of the hook.

[0032] Furthermore, a threaded tail locking head 11 is axially provided at the other end of the base 1, and a clamping position 12 is provided in the middle of the base 1. The clamping position 12 is used to clamp on the operating table or a corresponding positioning mechanism to clamp or position the retractor as a whole. The end of the tail locking head 11 extends to the clamping position 12, and a jacking rod 13 is movably provided in the base 1. One end of the jacking rod 13 is limited in the base 1 and spherically hinged with the ball joint 27. The other end of the jacking rod 13 corresponds to the tail locking head 11 and extends to the clamping position 12. When the base 1 is clamped on the edge of the operating table or other supporting mechanisms, the two sides of the clamped part will contact the tail locking head 11 and the jacking rod 13 respectively. At this time, if the tail locking head 11 is gradually tightened, the tail locking head 11 will be displaced to one side of the jacking rod 13 to resist the clamped part, and then push the jacking rod 13 to gradually tighten the claw-shaped clamping head 10 and the ball joint 27. In other words, by rotating the tail locking head 11, not only the clamping and fixing of the clamping position 12 can be achieved, but also the positioning and fixing between the base 1 and the telescopic sleeve 2 can be achieved.

[0033] The double-headed surgical retractor of the utility model is directly connected by a spherical hinge or telescopic connection of structures such as a base 1, a telescopic sleeve 2, a telescopic rod 3, a pull rod 4, and a double-headed push rod 5, so that the position of the retractor can be adjusted at multiple angles, and the overall length of the retractor can be adjusted so that the position of the retractor reaches the ideal state for the surgeon during surgery. The double-headed surgical retractor of the utility model replaces the hand-held retractor, thereby avoiding the problems of inaccurate opening degree and poor stability caused by the hand-held retractor. The double-headed surgical retractor of the utility model is provided with a double-headed retractor on a single instrument, and the purpose of opening the wound is achieved by the double-headed retractor on the single instrument, thereby making it more convenient for the surgeon to perform surgery.

[0034] The above-described embodiments are only preferred embodiments for fully illustrating the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or changes made by technicians in the technical field on the basis of the present utility model are all within the protection scope of the present utility model. The protection scope of the present utility model shall be subject to the claims.

[0035] In the description of the present utility model, it should be understood that if the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like are used to indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, if the terms "first", "second", etc. appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

Claims

1. A double-ended surgical retractor, characterized in that: It includes a base, a telescopic sleeve, a telescopic rod, a pull rod, and a double-headed push rod which are connected in sequence; the base and the telescopic sleeve are hinged, one end of the telescopic rod is adjustably inserted into the telescopic sleeve, and the other end of the telescopic rod is hinged to one end of the pull rod; the double-headed push rod includes a pair of ball heads and a pair of push rods, each of the ball heads is connected to each of the push rods, and a ball head seat matching the pair of ball heads is provided at the other end of the pull rod, and the double-headed push rod and the push rod are hinged through the cooperation of the ball head and the ball head seat.

2. The double-ended surgical retractor according to claim 1, characterized in that: A U-shaped opening matching with the end of the push rod is provided at the end of the telescopic rod, and a locking piece is provided through the two side walls of the U-shaped opening and the end of the push rod; the locking piece includes a screw head, a conical screw and a threaded rod, and a locking knob with a threaded matching connection is provided on the threaded rod, and the conical screw is located between the U-shaped openings.

3. The double-ended surgical retractor according to claim 2, characterized in that: The pull rod is a hollow rod-shaped structure, in which a push rod is axially arranged, one end of the push rod is in contact with and resists the conical screw, and a double-headed ball cap is provided at the other end of the push rod, on which a pair of spherical grooves matching the shape and size of the ball heads are provided, and the pair of ball heads are respectively arranged in a pair of spherical grooves.

4. The double-ended surgical retractor according to claim 3, characterized in that: A hook piece is provided at the outer end of the push rod. The hook piece is arranged perpendicular to the push rod and rotates relative to the push rod.

5. The double-ended surgical retractor according to claim 1, characterized in that: An external thread, an elastic member, a shaft sleeve, and a fixed sleeve are provided at the end portion where the telescopic sleeve and the telescopic rod are plugged in; the external thread is circumferentially arranged at the end portion of the telescopic sleeve, the elastic member and the shaft sleeve are sequentially sleeved on the telescopic rod, and the two ends of the elastic member are respectively resisted and matched with the telescopic sleeve and the shaft sleeve; the elastic member is located in the fixed sleeve, one end of the fixed sleeve is matched and connected with the external thread, and the other end close to the fixed sleeve is provided with a tapered hole with a gradually decreasing aperture from the inside to the outside on the inner wall of the fixed sleeve; a through hole is provided on the shaft sleeve close to the elastic member, a spherical ball is provided in the through hole, and the spherical ball is in contact and matched with the hole wall of the tapered hole and the telescopic rod.

6. The double-ended surgical retractor according to claim 5, characterized in that: The outer diameter of the sleeve matches the minimum inner diameter of the fixing sleeve. The sleeve extends away from the outer end of the elastic member to the outside of the fixing sleeve. An annular lug is circumferentially arranged at the outer end of the sleeve.

7. The double-ended surgical retractor according to claim 1, characterized in that: A claw-shaped clamping head is arranged at one end of the base, and a ball joint matched with the claw-shaped clamping head is arranged at one end where the telescopic sleeve is connected with the base.

8. The double-ended surgical retractor according to claim 7, characterized in that: A threaded tail locking head is axially arranged at the other end of the base, a clamping position is arranged in the middle of the base, and the end of the tail locking head extends to the clamping position.

9. The double-ended surgical retractor according to claim 8, characterized in that: A clamping rod is also movably provided in the base, one end of which is limited in the base and resists and cooperates with the clamping head, and the other end of the clamping rod extends to the clamping position corresponding to the tail locking head.

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