CN212972999U - Auxiliary instrument for small incision suturing of pleuroperitoneal cavity - Google Patents

Abstract

The utility model discloses a pleuroperitoneal cavity small incision suturing assistor, which comprises a traction unit, a connecting rod, an operation unit and a cleaning unit, wherein the connecting rod comprises a first end of the connecting rod and a second end of the connecting rod which are positioned in the extending direction of the connecting rod, the traction unit is a hard structure arranged at the first end of the connecting rod, and the operation unit is arranged at the second end of the connecting rod; the operation unit is connected with the pulling unit to control the pulling unit to be switched and locked between the two locking states; wherein, under the first locking state, the traction unit extends two traction ends towards the peripheral side of the connecting rod, and the traction ends are hooked to the operation unit; and in the second locking state, the whole pulling units are distributed along the axial direction of the connecting rod, and the whole size is smaller than or equal to the circumferential size of the connecting rod. The utility model provides a sew up assistor, the operation of being convenient for helps accurate sewing up.

Description

Auxiliary instrument for small incision suturing of pleuroperitoneal cavity

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to auxiliary instrument is sewed up to little incision of pleuroperitoneal cavity.

Background

The pleuroperitoneal surgery is an advanced stage of surgery and is a necessary trend for the development of future surgical methods. Currently, a small incision is needed after the thoraco-laparoscopic surgery. The incisions in which the surgery is performed are all multi-layered structures. In order to meet the requirements of beauty and pain reduction of patients, the incision on the surface layer of the skin is generally smaller; however, to meet the needs of the surgery, the incision located at the deep level is large; for example, a 3cm incision in the surface layer may correspond to a 5cm to 6cm incision in the deep layer.

Due to the structural characteristics of the small incision, the existing small incision suturing process has the following problems: 1. the comprehensive vision is poor, 2, the level positioning is not good, and 3, the hand can be accurately touched, but the general instrument is difficult to realize. In the operation, 2-3 persons are generally required to simultaneously operate a plurality of instruments to cooperatively complete the suture operation; the multi-person operation has the technical problems of more occupied space and poor coordination. Due to the technical problems, the operator is difficult to see the tissues of all layers clearly and sew the tissues accurately, so that the sewing difficulty of small incisions is high. At present, no auxiliary instrument specially used for multi-layer suture of small incisions is clinically used, all layers need to be firmly sutured in the suturing operation after the thoraco-laparoscopic surgery, and no surgical instrument specially used for accurately suturing all the layers is clinically used at present.

In order to solve the above technical problems, it is necessary to develop a small incision suturing aid for the pleuroperitoneal cavity, so as to fix each layer of tissue well during the surgical suturing process, and facilitate the surgeon to see each layer of tissue clearly and suture accurately.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem existing in the suturing process of the small thoraco-laparoscopic incision clinically, the utility model provides an auxiliary device for suturing the small thoraco-laparoscopic incision.

A minor incision suture assistor for the pleuroperitoneal cavity comprises a traction unit, a connecting rod, an operation unit and a cleaning unit, wherein the connecting rod comprises a first end and a second end which are positioned in the extension direction of the connecting rod; the connecting rod comprises a fixing rod with a hollow cylindrical structure, an opening is formed in the circumferential surface of the second end of the fixing rod, and the opening is communicated with the hollow part of the fixing rod; the cleaning unit comprises a flushing port and a cover for sealing the flushing port, and the flushing port is a hollow cylinder arranged on the periphery of the fixing rod around the opening; the pulling unit is movably connected with the connecting rod, the pulling unit moves relative to the connecting rod to enable the pulling unit to comprise at least two switchable locking states, and the operation unit is connected with the pulling unit to control the pulling unit to be switched and locked between the two locking states; the traction unit extends towards the peripheral side of the connecting rod to form two traction ends in a first locking state, and the traction ends are hooked to the operation unit; and in the second locking state, the whole pulling units are distributed along the axial direction of the connecting rod, and the whole size is smaller than or equal to the circumferential size of the connecting rod. When the auxiliary instrument for suturing the small incision of the pleuroperitoneal cavity is used, the traction unit in the auxiliary instrument extends into the incision under the second locking state, and the whole state of the traction unit is contracted so as to be convenient for entering the small incision; after the traction unit enters the small incision, the traction unit is switched to a first locking state, and the two traction ends hooked to the direction of the operation unit can hook the tissues on the two sides of the small incision, so that only one person needs to operate the auxiliary device to hook the layer of the small wound to be sutured, and an operator can clearly see each layer of tissue and accurately suture the tissue; in addition, the washing unit is arranged to facilitate washing and disinfection of the whole lifting device.

Further, the length of the connecting rod is 30cm-40cm, and the maximum length of a connecting line between two points of the periphery of the connecting rod in the circumferential direction is 6mm-12 mm; the distance between the two pulling ends is 14mm-16 mm. In the arrangement, the specific size of a key part is limited, and the length of the connecting rod is limited, so that the small incision suturing assistor for the pleuroperitoneal cavity is convenient to operate in the small incision suturing process; the limitation of the circumferential size of the connecting rod enables the small incision suture assistor for the pleuroperitoneal cavity to smoothly enter the stabbing card and also has stability; the distance of the traction end is set, so that in the use process, the traction of a small incision can be realized, and meanwhile, the pulled tissue is not easy to be injured.

Furthermore, the outermost side of the connecting rod is of a cylindrical structure, and the diameter of the cylindrical structure is 6mm-12 mm. In the arrangement, the outermost side of the connecting rod is arranged to be a cylindrical structure with the diameter of 6mm-12mm, and the cylindrical structure is simple in structure and convenient for inserting and extracting operations.

Further, the connecting rod comprises a fixed rod and a movable rod, wherein the fixed rod is of a hollow cylindrical structure, the movable rod is arranged in the hollow of the fixed rod, and the second end of the movable rod is connected with the operation unit; the traction unit comprises four interconnecting rods and two traction rods, and the four interconnecting rods are connected and hinged through respective end parts; the four interconnecting rods comprise two first interconnecting rods and two second interconnecting rods, the length of each first interconnecting rod is smaller than that of each second interconnecting rod, and the two first interconnecting rods are arranged adjacently; the joint of the two first interconnecting rods is rotatably connected with the first end of the movable rod; the joint of the two second interconnecting rods is rotatably connected with the first end of the fixed rod; in the axial direction of the fixed rod, the first end of the movable rod is positioned between two end parts of the fixed rod; the two traction rods are respectively provided with a free end and a fixed end, wherein the fixed ends of the two traction rods are respectively and fixedly connected with one end of a second interconnection rod hinged with the first interconnection rod, and the free ends of the traction rods are the traction ends. In the arrangement, the four interconnecting rods and the two traction rods form the traction unit, and when the two first interconnecting rods are positioned on a straight line and are perpendicular to the axial direction of the movable rod in the first locking state, the straight lines formed by the two second interconnecting rods and the two first interconnecting rods form a triangle, and the triangle has better stability.

Further, when the pulling unit is in the first locking state, two straight lines which respectively pass through the fixed ends of the two pulling rods and are parallel to the axis of the connecting rod are two indicating lines, one end of the pulling rod, which is far away from the connecting rod and the operating unit, is the free end, and one end of the pulling rod, which is close to the connecting rod and the operating unit, is the fixed end; the included angle between the connecting line of the free end and the fixed end of one traction rod and the indicating line passing through the fixed end is alpha, and alpha is more than 0 degree and less than 90 degrees. In this arrangement, the free end of the pull rod can better hook the small notch.

Furthermore, the end surface of the free end of the traction rod is an arc surface. In the arrangement, the end face of the free end of the traction rod is set to be the arc surface, when peripheral tissues of a small incision are drawn, the tissues can be protected to the maximum extent by the arc surface structure, and contusion and scratch are avoided.

Further, the operation unit includes a hand-held portion and an operation portion; the handheld part is of a hollow cylindrical structure which is in through connection with the second end of the fixed rod, the operating part comprises a push rod which is arranged in the hollow of the handheld part, and the second end of the movable rod extends into the hollow of the handheld part and is connected with the first end of the push rod; the push rod is controlled to reciprocate in the hollow cavity of the handheld part to drive the movable rod to reciprocate in the hollow cavity of the fixed rod, so that the traction unit is switched between two locking states. In the arrangement, the arrangement of the ejector rod can realize the switching of the traction unit under two locking states under the action of the ejector rod, and the structure is simple and the stability is good.

Furthermore, the operating part also comprises a fixed head, a spring and a pulling part, wherein the fixed head is used for plugging one end of the handheld part, which is far away from the fixed rod, the spring is arranged in the hollow of the handheld part, the first end of the spring is abutted against the second end of the ejector rod, and the second end of the spring is abutted against the fixed head; the outer peripheral wall of the second end of the ejector rod is provided with a convex rod, the handheld portion is provided with a limiting groove which penetrates along the circumferential direction, the convex rod extends out of the limiting groove, and the pulling piece is connected with the convex rod and can drive the ejector rod to move axially and reciprocally along the fixed rod. In the arrangement, the operating part adopts the combination of the fixed head, the spring and the pulling piece, and the different locking states of the pulling unit are switched when the spring is in a free state and a compression state, so that the structure is simple and the operation is convenient; when the spring is in a compressed state, the pulling unit is in a first locked state, and when the spring is in a free state, the pulling unit is in a second locked state.

Furthermore, the pulling part comprises a loop bar and a pulling handle, wherein the loop bar is a hollow structure sleeved outside the handheld part, a hole for accommodating the convex bar is formed in the loop bar, the end part of the convex bar is arranged in the hole, and the pulling handle is arranged outside the loop bar. In the arrangement, the pulling piece is specifically limited, and the sleeve rod is driven to axially slide along the handheld part by pulling the handle, so that the pulling unit is switched between two locking states.

Furthermore, the pulling handle comprises two sub-handles positioned at two sides of the loop bar, the whole fixed head is of a columnar structure, a cylindrical groove is formed in the side face of the columnar structure, and one end, far away from the fixed rod, of the handheld part is connected with the fixed head through the cylindrical groove; the pulling handle, the fixing head and the structure between the pulling handle and the fixing head are integrally in an I shape. In the arrangement, the I-shaped arrangement is simple in structure and convenient to realize, and the structure can facilitate a user to complete the switching of the traction unit in two locking states by one hand.

The utility model provides a pleuroperitoneal cavity small incision suture assistor, the traction unit has at least two locking states to conveniently enter the incision, and two traction ends hooked to the direction of the operation unit can hook the tissues on two sides of the small incision, so that only one person is needed to operate the assistor to hook the layer of the small wound to be sutured, the operator can clearly see each layer of tissue and accurately suture, wherein the arrangement of the flushing unit can conveniently flush and disinfect the whole lifting device; the specific size of the key part is limited, so that the convenience in use, the stability of the structure, the stability of the traction operation and the maximum protection on the traction tissue are considered; the four interconnecting rods and the two traction rods form the traction unit, so that the traction unit can be switched between a first locking state and a second locking state, and the structure is simple and the stability is good; the operation part is combined with the fixed head, the spring and the pulling piece, so that the pulling unit is switched between the first locking state and the second locking state, and the operation is simple and easy; through the arrangement of the H shape, an operator can conveniently complete the switching of the traction unit under two locking states by one-hand operation.

Drawings

Fig. 1 is a schematic overall structural view (a first locking state) of a minor incision suturing aid for the pleuroperitoneal cavity in an embodiment of the present invention;

fig. 2 is a partially enlarged front view (a first locked state) of a pulling unit in the minor incision suturing assistor for the pleuroperitoneal cavity in an embodiment of the present invention;

fig. 3 is a partially enlarged perspective view (a first locked state) of a pulling unit in the minor incision suturing assistor for the pleuroperitoneal cavity in an embodiment of the present invention;

fig. 4 is a partially enlarged schematic side view of a pulling unit in the minor incision suturing aid for the pleuroperitoneal cavity (second locked state) according to an embodiment of the present invention;

fig. 5 is a partially enlarged perspective view (second locked state) of the pulling unit in the minor incision suturing assistor for the pleuroperitoneal cavity in the embodiment of the present invention;

fig. 6 is a schematic view of a partial enlarged perspective view of a joint between a hand-held portion and an operation portion in a minor incision suturing assistor for pleuroperitoneal cavity in an embodiment of the present invention;

fig. 7 is an enlarged cross-sectional view of a joint between a hand-held portion and an operation portion in the minor incision suturing aid for the pleuroperitoneal cavity in an embodiment of the present invention;

fig. 8 is a partially enlarged view of a cross-sectional view of a joint between a hand-held portion and an operation portion in the minor incision suturing assistance device for the pleuroperitoneal cavity in an embodiment of the present invention;

fig. 9 is a partially enlarged schematic view of a hand-held portion of a small incision suturing aid for the pleuroperitoneal cavity in an embodiment of the present invention;

fig. 10 is a schematic overall view of a pulling member of the minor incision suturing aid for the pleuroperitoneal cavity in an embodiment of the present invention.

In the figure, 100, a pulling unit; 110. a first interconnecting rod; 120. a second interconnecting link; 130. a traction rod; 131. A free end; 132. a fixed end; 200. a connecting rod; 201. a first end of a connecting rod; 202. a second end of the connecting rod; 210. fixing the rod; 211. a first end of a fixed rod; 212. a second end of the fixing rod; 220. a movable rod; 221. A movable rod first end; 222. a movable rod second end; 223. a cylindrical structure; 300. an operation unit; 310. A hand-held portion; 311. a limiting groove; 312. a top rod; 313. a nose bar; 320. a fixed head; 321. a cylindrical recess; 330. a spring; 331. a spring first end; 332. a spring second end; 340. a pulling member; 341. a loop bar; 342. pulling the handle; 3421. a sub-handle; 343. an aperture; 400. a cleaning unit; 410. flushing the opening; 420. And a cover.

Detailed Description

The embodiments of the present invention will be described in detail with reference to the accompanying drawings, and some structures are not shown in the drawings, which can be derived by those skilled in the art according to the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Embodiment a minor incision suture assistor for pleuroperitoneal cavity

Fig. 1 is a schematic overall structure diagram of a minor thoracoabdominal incision suturing aid in this embodiment, and fig. 2 is a schematic partial enlarged front view of a pulling unit 100 in the minor thoracoabdominal incision suturing aid in this embodiment; fig. 3 is a partially enlarged perspective view of the pulling unit 100 in the minor incision suturing assistor for the pleuroperitoneal cavity, as shown in fig. 1-3, the minor incision suturing assistor for the pleuroperitoneal cavity in the present embodiment includes the pulling unit 100, a connecting rod 200 and an operating unit 300, the connecting rod 200 includes a first end 201 of the connecting rod and a second end 202 of the connecting rod in the extending direction thereof, the pulling unit 100 is a hard structure disposed at the first end 201 of the connecting rod, and the operating unit 300 is disposed at the second end 202 of the connecting rod; the pulling unit 100 is movably connected with the connecting rod 200, the pulling unit 100 is movable relative to the connecting rod 200 to enable the pulling unit 100 to comprise at least two switchable locking states, and the operation unit 300 is connected with the pulling unit 100 to control the pulling unit 100 to be switched and locked between the two locking states; wherein, in the first locking state, the pulling unit 100 extends two pulling ends towards the periphery of the connecting rod 200, and the pulling ends are hooked to the operation unit 300; in the second locked state, the entire pulling unit 100 is distributed in the axial direction of the connecting rod 200 and the entire dimension is equal to or smaller than the circumferential dimension of the connecting rod 200. The assistor in this embodiment may further include a cleaning unit 400, wherein the connection rod 200 includes a fixing rod 210 having a hollow cylindrical structure, and an opening is formed on a circumferential surface of a second end 212 of the fixing rod, and the opening is communicated with a hollow of the fixing rod 210; the washing unit 400 includes a washing port 410 and a cover 420 for sealing the washing port 410, the washing port 410 being a hollow cylinder disposed on the outer circumference of the fixing lever 210 around an opening. The washing unit is arranged to facilitate washing and disinfection of the whole lifting device, and particularly after the anastomosis operation is completed, washing liquid and disinfection liquid can be injected into the hollow part of the fixing rod 210 from the washing port 410, so that washing and disinfection of the inside of the fixing rod 210 are achieved, and the lifting device can be repeatedly applied to the operation.

Fig. 4 is a partially enlarged side view schematically showing the pulling unit 100 in the minor incision suturing assistor for the thoracic and abdominal cavity in the present embodiment, and fig. 5 is a partially enlarged perspective view schematically showing the pulling unit 100 in the minor incision suturing assistor for the thoracic and abdominal cavity. In fig. 1-3, the pulling unit 100 is in a first locked state, and in fig. 4-5, the pulling unit 100 is in a second locked state.

When the auxiliary instrument for suturing the small incision of the pleuroperitoneal cavity is used, the traction unit 100 in the auxiliary instrument is stretched into the incision under the second locking state, and the whole state of the traction unit 100 is contracted so as to be convenient for entering the small incision; after the pulling unit 100 enters the small incision, the pulling unit 100 is switched to a first locking state, and the two pulling ends arranged in the direction of the operation unit 300 can hook the tissues on the two sides of the small incision, so that only one person needs to operate the auxiliary device to hook the layer of the small wound to be sutured, and an operator can see the tissues of each layer clearly and suture the tissues accurately.

In the embodiment, the key dimensions are specifically designed, the length of the connecting rod 200 is preferably 30cm-40cm, and the maximum length of a connecting line between two points of the periphery of the connecting rod 200 in the circumferential direction is 6mm-12 mm; the distance between the two pulling ends is 14mm-16 mm. Further preferably, the length of the connecting rod 200 may be 32cm to 38cm, and the length of the connecting rod 200 may be 35 cm. Further, the distance between the two pulling ends can be 14.5mm-15.5mm, and the distance between the two supporting ends can also be 15 mm; the length of the connecting rod 200 is limited by limiting the specific size of key parts, so that the small incision suturing assistor for the pleuroperitoneal cavity is convenient to operate in the small incision suturing process; the limitation of the circumferential size of the connecting rod 200 ensures that the minor incision suture assistor for the pleuroperitoneal cavity can smoothly enter the stabbing card and has stability; the distance of the traction end is set, so that in the use process, the traction of a small incision can be realized, and meanwhile, the pulled tissue is not easy to be injured. The outermost side of the connecting rod 200 in this embodiment is preferably a cylindrical structure having a diameter of 6mm to 12 mm. The outermost side of the connecting rod 200 is set to be a cylindrical surface structure with the diameter of 6mm-12mm, the diameter of the cylindrical structure can be selected to be 7mm, 8mm, 9mm, 11mm or 12mm optionally, and the cylindrical structure is simple in structure and convenient to insert and extract.

As shown in fig. 2 to 5, the pulling unit 100 in this embodiment includes a fixed rod 210 and a movable rod 220, wherein the fixed rod 210 is a hollow cylinder structure, the movable rod 220 is disposed in the hollow of the fixed rod 210, and the second end 222 of the movable rod is connected to the operation unit 300; the drawing unit 100 comprises four interconnected rods and two drawing rods 130, wherein the four interconnected rods are in pipe-type hinge joint through respective end parts; two first interlink rods 110 and two second interlink rods 120 are included in the four interlink rods, the length of the first interlink rod 110 is smaller than that of the second interlink rod 120, and the two first interlink rods 110 are adjacently disposed; wherein, the connection position of the two first interconnecting rods 110 is rotatably connected with the first end 221 of the movable rod; the junction of the two second interconnecting links 120 is rotatably connected to the fixed rod first end 211; in the axial direction of the fixed rod 210, the movable rod first end 221 is located between two ends of the fixed rod 210; the two pulling rods 130 respectively have a free end 131 and a fixed end 132, wherein the fixed ends 132 of the two pulling rods 130 are respectively and fixedly connected to one end of the second interconnecting rod 120 hinged to the first interconnecting rod 110, and the free end 131 of the pulling rod 130 is a pulling end. The drawing unit 100 is formed by four interconnecting rods and two drawing rods 130, and in a first locking state, when two first interconnecting rods 110 are positioned on a straight line and are perpendicular to the axial direction of the movable rod 220, the straight lines formed by two second interconnecting rods 120 and the two first interconnecting rods 110 form a triangle, and the triangle has better stability.

As shown in fig. 3, the movable rod 220 in this embodiment has a cylindrical structure, and the joints of the two first interconnecting rods 110 and the first end 221 of the movable rod are provided with a groove penetrating the circumference of the movable rod 220 at the first end 221 of the movable rod, and the groove is used for accommodating the joints of the two first interconnecting rods 110.

Further, when the pulling unit 100 is in the first locked state, two straight lines respectively passing through the fixed ends 132 of the two pulling rods 130 and parallel to the axis of the connecting rod 200 are two indication lines, one end of the pulling rod 130 farther from both the connecting rod 200 and the operating unit 300 is the free end 131, and one end of the pulling rod 130 closer to both the connecting rod 200 and the operating unit 300 is the fixed end 132; the angle between the connecting line of the free end 131 and the fixed end 132 of one of the pulling rods 130 and the indicating line passing through the fixed end 132 is alpha, and alpha is more than 0 degrees and less than 90 degrees. This definition causes two of the pulling ends to hook toward the operating unit 300, as shown in particular in fig. 2-3. Further preferably, 20 DEG.ltoreq.60 DEG, for example, where alpha may be 30 DEG, 35 DEG, 40 DEG, 45 DEG, 50 DEG, 55 DEG, 60 DEG, etc. In this embodiment, the pulling rod 130 is a straight rod structure, and the straight rod structure has the advantages of simple structure and convenience in production and manufacture. Of course, other forms may be adopted, for example, a bent rod structure may be adopted, as long as it can form a pulling end hooked to the direction of the operation unit 300; the provision of the entire tie bar 130 and the free end 131 enables the tie bar 130 to better catch the small incision.

When the auxiliary device is used for pulling peripheral tissues of a small incision, in order to protect the tissues to the maximum extent and avoid contusion and scratch, the end surface of the free end 131 of the pulling rod 130 is preferably set to be a circular arc surface. Fig. 6 is a partially enlarged perspective schematic view of the connection between the handle portion 310 and the operation portion (i.e., the operation unit 300) in the minor incision suturing assist device for the pleuroperitoneal cavity in this embodiment; fig. 7 is a partially enlarged sectional view of the joint of the hand-held portion 310 and the operation portion (i.e., the operation unit 300) in the minor incision suturing assistance device for the pleuroperitoneal cavity in the embodiment; FIG. 8 is an enlarged partial schematic view of FIG. 7; FIG. 9 is a partially enlarged view of the hand-held portion 310 of the small incision suturing aid for the pleuroperitoneal cavity in accordance with the present embodiment; fig. 10 is a schematic overall structure diagram of the pulling member 340 in the minor incision suturing aid for the pleuroperitoneal cavity in the embodiment. As shown in fig. 6 to 10, the operation unit 300 in the present embodiment specifically includes a hand-held portion 310 and an operation portion; the hand-held portion 310 is a hollow cylindrical structure which is in through connection with the second end 212 of the fixed rod, the operation portion comprises a push rod 312 which is arranged in the hollow of the hand-held portion 310, and the second end of the movable rod 220 extends into the hollow of the hand-held portion 310 and is connected with the first end of the push rod 312; the reciprocating motion of the top rod 312 in the hollow of the hand-held part 310 is controlled to drive the movable rod 220 to reciprocate in the hollow of the fixed rod 210, so that the pulling unit 100 is switched between two locking states.

As shown in fig. 6-7, the top bar 312 in this embodiment is a cylindrical structure fixedly connected to the second end 222 of the movable rod, and the diameter of the top bar 312 is slightly smaller than the hollow diameter of the handle 310.

The operating portion in this embodiment further includes a fixed head 320, a spring 330 and a pulling member 340, wherein the fixed head 320 is used for plugging one end of the handheld portion 310 away from the fixed rod 210, the spring 330 is disposed in the hollow of the handheld portion 310, a first end 331 of the spring abuts against a second end of the push rod 312, and a second end 332 of the spring abuts against the fixed head 320; the outer peripheral wall of the second end of the push rod 312 is provided with a convex rod 313, the handheld portion 310 is provided with a limit groove 311 which penetrates along the circumferential direction, the convex rod 313 extends out of the limit groove 311, and the pulling piece 340 is connected with the convex rod 313 and can drive the push rod 312 to reciprocate along the axial direction of the fixing rod 210. The operation part adopts the combination of the fixed head 320, the spring 330 and the pulling piece 340, and switches different locking states of the pulling unit 100 when the spring 330 is in a free state and a compression state, so that the structure is simple and the operation is convenient; and the pulling operation makes the whole operation process time-consuming shorter, and can avoid lengthening the operation time.

Preferably, when the spring 330 is in a compressed state, the drawing unit 100 is in a first locked state, and when the spring 330 is in a free state, the drawing unit 100 is in a second locked state. By such a design, in use, by pulling the pulling member 340 therein, the spring 330 is compressed, so that the pulling unit 100 is in the second locking state and enters the small incision; when the pulling unit 100 is required to support the peripheral tissue of the small incision, the pulling member 340 is released, and the spring 330 automatically extends to the free state, in which the pulling unit 100 is in the first locked state, and the pulling end thereof extends out and supports the peripheral tissue of the small incision. The spring 330 is in a free state when the pulling unit 100 is in the first locked state, and is locked to this state without operating the pulling member 340, and when the small incision is pulled, the pulling unit 100 is subjected to the force of the tissue around the small incision, so that the pulling unit 100 is continuously maintained in the first locked state.

As shown in fig. 8-10, the pulling member 340 in this embodiment includes a sleeve 341 and a pulling handle 342, wherein the sleeve 341 is a hollow structure sleeved outside the handle 310, the sleeve 341 has a hole 343 for receiving the protruding rod 313, an end of the protruding rod 313 is disposed in the hole 343, and the pulling handle 342 is disposed outside the sleeve 341. In the embodiment, the pulling member 340 is specifically limited, and the handle 342 is pulled to drive the sleeve rod 341 to axially slide along the handheld portion 310, so as to switch the pulling unit 100 between two locking states.

As shown in fig. 9-10, the pulling handle 342 of the present embodiment includes two sub-handles 3421 located at two sides of the sleeve 341, the fixing head 320 is a cylindrical structure as a whole, a cylindrical groove 321 is provided on a side surface of the cylindrical structure, and one end of the holding portion 310 away from the fixing rod 210 is connected to the fixing head 320 through the cylindrical groove 321; the pull handle 342, the fixed head 320, and the structure between the pull handle 342 and the fixed head 320 are generally in the shape of an "I". In this arrangement, the i-shaped arrangement is simple and easy to implement, and the structure facilitates the user to switch the pulling unit 100 between the two locking states with one hand. More specifically, the outer wall of the end of the handle 310 away from the fixing rod 210 and the inner wall of the cylindrical groove 321 are fixedly connected to each other, for example, they may be fastened with threads, or they may be glued or connected in other possible ways.

The above description of the embodiments is only intended to illustrate the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several modifications can be made to the present invention, and these modifications will fall within the protection scope of the claims of the present invention.

Claims (10)

1. The minor incision suture assistor for the pleuroperitoneal cavity is characterized by comprising a traction unit, a connecting rod, an operation unit and a cleaning unit, wherein the connecting rod comprises a first end and a second end which are positioned in the extending direction of the connecting rod; the connecting rod comprises a fixing rod with a hollow cylindrical structure, an opening is formed in the circumferential surface of the second end of the fixing rod, and the opening is communicated with the hollow part of the fixing rod; the cleaning unit comprises a flushing port and a cover for sealing the flushing port, and the flushing port is a hollow cylinder arranged on the periphery of the fixing rod around the opening; the pulling unit is movably connected with the connecting rod, the pulling unit moves relative to the connecting rod to enable the pulling unit to comprise at least two switchable locking states, and the operation unit is connected with the pulling unit to control the pulling unit to be switched and locked between the two locking states; the traction unit extends towards the peripheral side of the connecting rod to form two traction ends in a first locking state, and the traction ends are hooked to the operation unit; and in the second locking state, the whole pulling units are distributed along the axial direction of the connecting rod, and the whole size is smaller than or equal to the circumferential size of the connecting rod.

2. The minor incision suturing aid for the pleuroperitoneal cavity according to claim 1, wherein the length of the connecting rod is 30cm to 40cm, and the maximum length of a connecting line between two points located on the periphery in the circumferential direction of the connecting rod is 6mm to 12 mm; the distance between the two pulling ends is 14mm-16 mm.

3. The minor incision suturing aid for the pleuroperitoneal cavity as claimed in claim 2, wherein the outermost side of the connecting rod is a cylindrical structure, and the diameter of the cylindrical structure is 6mm-12 mm.

4. The small incision suturing aid for the pleuroperitoneal cavity as claimed in claim 1, wherein said connecting rod comprises a fixed rod and a movable rod, wherein said fixed rod is a hollow cylinder structure, said movable rod is arranged in the hollow of said fixed rod, and the second end of said movable rod is connected with said operating unit; the traction unit comprises four interconnecting rods and two traction rods, and the four interconnecting rods are connected and hinged through respective end parts; the four interconnecting rods comprise two first interconnecting rods and two second interconnecting rods, the length of each first interconnecting rod is smaller than that of each second interconnecting rod, and the two first interconnecting rods are arranged adjacently; the joint of the two first interconnecting rods is rotatably connected with the first end of the movable rod; the joint of the two second interconnecting rods is rotatably connected with the first end of the fixed rod; in the axial direction of the fixed rod, the first end of the movable rod is positioned between two end parts of the fixed rod; the two traction rods are respectively provided with a free end and a fixed end, wherein the fixed ends of the two traction rods are respectively and fixedly connected with one end of a second interconnection rod hinged with the first interconnection rod, and the free ends of the traction rods are the traction ends.

5. The minor thoracoabdominal incision suturing aid according to claim 4, wherein when the traction unit is in the first locked state, two straight lines respectively passing through two fixed ends of the traction rod and parallel to the axis of the connecting rod are two indicating lines, one end of the traction rod farther from both the connecting rod and the operating unit is the free end, and one end of the traction rod closer to both the connecting rod and the operating unit is the fixed end; the included angle between the connecting line of the free end and the fixed end of one traction rod and the indicating line passing through the fixed end is alpha, and alpha is more than 0 degree and less than 90 degrees.

6. The minor incision thoracic and abdominal cavity suturing aid of claim 5, wherein an end surface of the free end of the pull rod is a circular arc surface.

7. The pleuroperitoneal cavity small incision suturing aid of claim 6, wherein the operating unit comprises a hand-held portion and an operating portion; the handheld part is of a hollow cylindrical structure which is in through connection with the second end of the fixed rod, the operating part comprises a push rod which is arranged in the hollow of the handheld part, and the second end of the movable rod extends into the hollow of the handheld part and is connected with the first end of the push rod; the push rod is controlled to reciprocate in the hollow cavity of the handheld part to drive the movable rod to reciprocate in the hollow cavity of the fixed rod, so that the traction unit is switched between two locking states.

8. The small incision thoracic and abdominal cavity suturing assist device as claimed in claim 7, wherein the operation portion further comprises a fixing head, a spring and a pulling member, wherein the fixing head is used for blocking one end of the hand-held portion away from the fixing rod, the spring is arranged in a hollow of the hand-held portion, a first end of the spring abuts against a second end of the push rod, and a second end of the spring abuts against the fixing head; the outer peripheral wall of the second end of the ejector rod is provided with a convex rod, the handheld portion is provided with a limiting groove which penetrates along the circumferential direction, the convex rod extends out of the limiting groove, and the pulling piece is connected with the convex rod and can drive the ejector rod to move axially and reciprocally along the fixed rod.

9. The minor incision thoracic and abdominal cavity suturing assist device as claimed in claim 8, wherein the pulling member comprises a sleeve rod and a pulling handle, wherein the sleeve rod is a hollow structure sleeved on the outer side of the handle portion, the sleeve rod is provided with a hole for accommodating the protruding rod, the end portion of the protruding rod is disposed in the hole, and the pulling handle is disposed on the outer side of the sleeve rod.

10. The minor incision suturing aid for the pleuroperitoneal cavity as claimed in claim 9, wherein the pulling handle comprises two sub-handles located at two sides of the loop bar, the fixing head is integrally of a columnar structure, a cylindrical groove is arranged on the side surface of the columnar structure, and one end of the holding part far away from the fixing rod is connected with the fixing head through the cylindrical groove; the pulling handle, the fixing head and the structure between the pulling handle and the fixing head are integrally in an I shape.

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