Multi-needle stitching instrument

Abstract

The utility model provides a multi-needle stitching instrument which comprises a handle part, a multi-cavity tube is arranged at the far end of the handle part, the far end of the multi-cavity tube is connected with a guide tube through a threading part, the handle part comprises a shell with two open ends, a wrench used for operating the threading part is arranged on the shell, a needle handle assembly is arranged in the shell, and the needle handle assembly is connected with the multi-cavity tube. A needle assembly is arranged at the far end of the needle handle assembly, the needle assembly comprises a needle fixing seat, at least one pair of needles are arranged at the far end of the needle fixing seat, and the needle handle assembly is pushed to control the needle assembly to move in the multi-cavity tube until the needle assembly penetrates out of the far end of the multi-cavity tube and is matched with the threading part to achieve suture operation. The blood vessel stitching instrument device can effectively suture a large puncture opening, can suture multiple needles at a time, and is stable and reliable in performance, relatively simple in structure and easy to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of suturing devices, in particular to a multi-needle suturing device. Background Art

[0002] Vascular interventional therapy has become the preferred treatment for some diseases due to its advantages of less trauma, accuracy, high efficiency, and fewer complications. Vascular interventional therapy generally involves puncturing a blood vessel to implant related devices for treatment. Effective closure and minimally invasive treatment of the vascular puncture site are clinical problems that need to be solved. The traditional method of hemostasis is to stop bleeding at the puncture point by manual or mechanical compression, which is prone to complications such as bleeding, hematoma, and vasovagal reflex, and the patient needs to stay in bed for a long time; the puncture site can be sutured with a vascular suturer, and for larger puncture sites, 2 or more sutures are required for suturing. The surgical operation process is cumbersome and the medical cost is high for the patient; secondly, the doctor needs to place two or more sutures in a certain direction to control the angle after suturing within a certain range during the operation, so as to avoid the angle being too small or too large, resulting in the distance between the two needles being too close, affecting the suturing effect. Therefore, the closure of the vascular puncture site has high requirements for the doctor's operating experience. Utility Model Content

[0003] In view of this, the utility model aims to provide a multi-needle suturing device to solve the technical problems in the prior art that a larger puncture hole requires two or more suturing devices for suturing, the surgical operation process is cumbersome, and the medical cost for the patient is high.

[0004] The utility model provides a multi-needle suturing device, comprising a handle portion, a multi-lumen tube is arranged at the distal end of the handle portion, the distal end of the multi-lumen tube is connected to a guide tube through a threading portion, the handle portion comprises a shell with openings at both ends, a wrench for operating the threading portion is arranged on the shell, a needle handle assembly is arranged in the shell, a needle assembly is arranged at the distal end of the needle handle assembly, the needle assembly comprises a needle fixing seat, at least one pair of needles is arranged at the distal end of the needle fixing seat, and the needle assembly is controlled to move in the multi-lumen tube by pushing the needle handle assembly until it passes through the distal end of the multi-lumen tube and cooperates with the threading portion to realize the suturing operation.

[0005] In some embodiments, the needle handle assembly includes a needle handle and a needle handle lock that are connected to each other, a sleeve rod is provided at the distal end of the needle handle, clamping parts are provided on both sides of the sleeve rod, a limiting part is provided at the distal end of the sleeve rod, the end of the sleeve rod is connected to the needle push rod, the needle fixing seat is provided in the needle handle lock, a driving spring is provided in the needle fixing seat, the driving spring is sleeved on the sleeve rod and limited by the limiting part.

[0006] In some embodiments, the needle handle lock includes a frame-type main body, a first hole is provided at one end of the main body, a snap-in groove is provided on the inner wall of the first hole, the snap-in piece is snap-fitted with the snap-in groove to realize the connection between the needle handle and the needle handle lock, a second hole is provided at the other end of the main body, a cantilever is provided in the second hole, an outer boss and an inner boss are respectively provided on both sides of the end of the cantilever, a first abutment piece is provided on the inner wall of the outer shell, a second abutment piece is provided on the needle fixing seat, the outer boss abuts with the first abutment piece, and the inner boss abuts with the second abutment piece.

[0007] In some embodiments, each pair of needles includes a solid needle and a hollow needle arranged upper and lower, the solid needle head is fixedly arranged at the distal end of the solid needle, and the hollow needle head is detachably connected to the distal end of the hollow needle. Sutures are pre-set on the solid needle and the hollow needle, one end of the suture is fixed on the solid needle, and the other end of the suture is connected to the corresponding hollow needle head, and when the needle handle assembly is pushed, the needle push rod is inserted into the proximal end of the hollow needle and pushes the hollow needle head out of the hollow needle.

[0008] In some embodiments, the proximal end of the threading portion is fixedly connected to the multi-lumen tube, a wire channel and a needle channel are arranged in the multi-lumen tube, the wire channel and the needle channel are respectively used to set the suture and the solid needle and the hollow needle in the needle assembly, and the guide tube is provided with an exchange guide wire hole, and the exchange guide wire hole is used to place the exchange guide wire.

[0009] In some embodiments, the threading portion includes a fixed seat, both ends of which are respectively connected to the multi-lumen tube and the guide tube, at least one sleeve seat is arranged on the fixed seat, a recess is arranged on the fixed seat, and the sleeve seat is arranged in the recess, so that the sleeve seat is confined to slide within the range of the recess through the recess in the fixed seat.

[0010] In some embodiments, when there are multiple sleeve seats, the multiple sleeve seats are arranged side by side and slide together in the fixing seat along the same trajectory.

[0011] In some embodiments, the wrench has a rotating shaft, which is arranged in the housing, the rotating shaft is connected to a first push-pull member, the first push-pull member is connected to a second push-pull member, a push-pull rod is arranged at the far end of the second push-pull member, and the push-pull rod is connected to the sleeve seat, so that the sliding of the sleeve seat can be controlled by operating the wrench through the push-pull rod.

[0012] In some embodiments, the first push-pull member includes a connecting rod and a connecting shell, a connecting member is provided at the end of the connecting rod 1501, and the connecting rod is connected to the rotating shaft through the connecting member; the second push-pull member is provided in the connecting shell and can move with the movement of the first push-pull rod, a connecting buffer spring is provided between the second push-pull member and the connecting shell, and the push-pull rod is provided at the distal end of the second push-pull member.

[0013] In some embodiments, two mounting holes are provided on the sleeve seat, and the two mounting holes are respectively provided near the ends of the sleeve seat. A sleeve is provided in the mounting hole, and the sleeve is used to pass the lead wire. At least one wire groove is provided at the distal end of the fixing seat, and the wire groove is provided corresponding to the sleeve seat.

[0014] The embodiment of the utility model is a vascular suturing device that can effectively sew up a large puncture hole, that is, sew up multiple needles at one time, and has stable and reliable performance, and at the same time has a relatively simple structure and is easy to operate.

[0015] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In the drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar parts. The drawings generally illustrate various embodiments by way of example and not limitation, and together with the specification and claims, are used to illustrate the disclosed embodiments. When appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method. The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 It is a structural schematic diagram of the multi-needle suturing device provided by the utility model;

[0018] Figure 2 It is a structural schematic diagram of the handle portion of the multi-needle suturing device provided by the utility model;

[0019] Figure 3 It is a structural schematic diagram of the needle handle assembly in the multi-needle suturing device provided by the utility model;

[0020] Figure 4It is a structural schematic diagram of the needle handle assembly in the multi-needle suturing device provided by the utility model;

[0021] Figure 5 It is a structural schematic diagram of the needle handle assembly in the multi-needle suturing device provided by the utility model;

[0022] Figure 6 It is a cross-sectional view of the needle handle assembly in the multi-needle suturing device provided by the utility model;

[0023] Figure 7 It is a cross-sectional view of the needle handle assembly in the multi-needle suturing device provided by the utility model;

[0024] Figure 8 It is a structural schematic diagram of a needle handle lock in a multi-needle suturing device provided by the utility model;

[0025] Fig. 9 It is a cross-sectional view of the needle handle lock in the multi-needle suturing device provided by the utility model;

[0026] Fig.10 It is a schematic diagram of the connection between the needle and the lead in the multi-needle suturing device provided by the utility model;

[0027] Fig.11 It is a schematic diagram of the connection between the needle and the suture in the multi-needle suturing device provided by the utility model;

[0028] Fig.12 It is a schematic diagram of the connection between the needle and the sleeve in the multi-needle suturing device provided by the utility model;

[0029] Fig.13 It is a structural schematic diagram of a fixing seat and a sleeve seat in a multi-needle suturing device provided by the utility model;

[0030] Fig.14 It is a sliding schematic diagram of a sleeve seat in a multi-needle suture device provided by the utility model;

[0031] Fig.15 It is a sliding schematic diagram of a sleeve seat in a multi-needle suture device provided by the utility model;

[0032] Fig.16 It is a structural schematic diagram of a sleeve seat in a multi-needle suture device provided by the utility model;

[0033] Fig.17 It is a structural schematic diagram of a sleeve seat in a multi-needle suture device provided by the utility model;

[0034] Fig.18 It is a schematic diagram of the connection between the sleeve seat and the lead wire in the multi-needle suture device provided by the utility model;

[0035] Fig.19It is a structural schematic diagram of a wrench and a push-pull member in a multi-needle suturing device provided by the utility model;

[0036] Fig. 20 It is a structural schematic diagram of a wrench and a push-pull member in a multi-needle suturing device provided by the utility model;

[0037] Fig.21 It is a structural schematic diagram of a wrench and a push-pull member in a multi-needle suturing device provided by the utility model;

[0038] Fig. 22 It is a schematic diagram of the arrangement of needles in a multi-cavity tube in a multi-needle suturing device provided by the utility model;

[0039] Fig.23 It is a schematic diagram of the movement of the needle pusher rod and the hollow needle in the multi-needle suturing device provided by the utility model;

[0040] Fig.24 It is a schematic diagram of the movement of the needle pusher rod and the hollow needle in the multi-needle suturing device provided by the utility model;

[0041] Fig.25 It is a schematic diagram of the structure of the multi-lumen tube in the multi-needle suturing device provided by the utility model;

[0042] Fig.26 The utility model is provided with the multi-needle suture device in the utility model.

[0043] The above drawings include the following reference numerals:

[0044] 100-multi-needle suture device; 101-guide tube; 102-exchange guide wire hole; 103-sleeve seat; 104-multi-lumen tube; 104a-needle channel; 105-handle; 107-sealing ring; 108-first wire groove; 109-second coil; 112-card slot; 113-first sleeve; 114-second sleeve; 115-third sleeve; 116-fourth sleeve; 118-lead; 118a-first lead; 118b-second lead; 119-solid needle; 120-hollow needle; 121-blood vessel; 122-suture; 122a-first suture; 122b-second suture; 124-wound; 125-push-pull rod; 127-fixing seat; 130-needle handle assembly; 1301-needle handle; 1 302-sleeve rod; 1303-clamping piece; 1304-limiting piece; 131-housing; 131a-first abutment piece; 132-wrench; 1321-rotating shaft; 134-needle handle lock; 134a-external boss; 134b-inner boss; 1341-main body; 1342-first hole; 1343-clamping groove; 1344-second hole; 1345-cantilever; 135-needle fixing seat; 135a-second abutment piece; 136-hollow needle tip; 137-driving spring; 138-needle push rod; 142-wire channel; 144-bleeding cavity; 150-first push-pull piece; 1501-connecting rod; 1502-connecting shell; 1503-connecting piece; 151-second push-pull piece; 152-buffer spring. DETAILED DESCRIPTION

[0045] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings, but are not intended to limit the present invention.

[0046] It should be understood that various modifications may be made to the embodiments disclosed herein. Therefore, the above description should not be considered as limiting, but only as an example of an embodiment. Other modifications within the scope and spirit of the utility model will occur to those skilled in the art.

[0047] The accompanying drawings, which are included in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the general description of the present invention given above and the detailed description of the embodiments given below, are used to explain the principles of the present invention.

[0048] These and other characteristics of the invention will become apparent from the following description of a preferred form of embodiment given as a non-limiting example, with reference to the accompanying drawings.

[0049] It should also be understood that although the present invention has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the present invention that have the features described in the claims and are therefore within the scope of protection defined thereby.

[0050] The above and other aspects, features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0051] Specific embodiments of the present invention are described hereinafter with reference to the accompanying drawings; however, it should be understood that the disclosed embodiments are merely examples of the present invention, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that obscure the present invention. Therefore, the specific structural and functional details disclosed herein are not intended to be limiting, but merely serve as the basis and representative basis for the claims to teach those skilled in the art to use the present invention in a variety of ways with substantially any suitable detailed structure.

[0052] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0053] This specification may use the phrases "in one embodiment", "in another embodiment", "in yet another embodiment" or "in other embodiments", all of which may refer to one or more of the same or different embodiments according to the present invention.

[0054] The utility model embodiment provides a multi-needle suturing device 100 for a large puncture hole in a blood vessel, such as Figure 1-Figure 26 As shown, the multi-needle suturing device 100 includes a handle portion 105, a multi-lumen tube 104 is arranged at the distal end of the handle portion 105, and the distal end of the multi-lumen tube 104 is connected to the guide tube 101 through a threading portion, and the threading portion is used to suturing a large vascular puncture at a designated position of the patient.

[0055] Specifically, the handle portion 105 includes a long handle-shaped housing 131 with two ends open, a wrench 132 is provided on the housing 131, a needle handle assembly 130 is provided in the housing 131, the proximal end of the needle handle assembly 130 passes through the proximal end of the housing 131, and the distal end of the needle handle assembly 130 extends into the multi-lumen tube 104. The wrench 132 here is used to operate the threading portion.

[0056] Furthermore, a needle assembly is arranged at the distal end of the needle handle assembly 130, and the needle assembly includes a needle fixing seat 135. At least one pair of needles is arranged at the distal end of the needle fixing seat 135. The needle handle assembly 130 is moved in the shell 131 by pushing the needle handle assembly 130, thereby controlling the movement of the needle assembly in the multi-lumen tube 104 until it passes through the distal end of the multi-lumen tube 104, and cooperates with the threading part to realize threading and suturing operations.

[0057] Specifically, the needle handle assembly 130 includes a needle handle 1301 and a needle handle lock 134 that are connected to each other. A sleeve rod 1302 is provided at the distal end of the needle handle 1301, and clamping parts 1303 are provided on both sides of the sleeve rod 1302. The clamping parts 1303 here can be, for example, hooks; a limit part 1304 is provided at the distal end of the sleeve rod 1302, and the end of the sleeve rod 1302 is connected to the needle push rod 138.

[0058] The needle fixing seat 135 is arranged in the needle handle lock 134 , and a driving spring 137 is arranged in the needle fixing seat 135 . The driving spring 137 is sleeved on the sleeve connecting rod 1302 and is limited by the limiting member 1304 .

[0059] The needle handle lock 134 here includes a frame-type main body 1341, a first hole 1342 is set at one end of the main body 1341, a snap-in groove 1343 is set on the inner wall of the first hole 1342, and the snap-in piece 1303 is snap-fitted with the snap-in groove 1343 to realize the connection between the needle handle 1301 and the needle handle lock 134.

[0060] Further, a second hole 1344 is provided at the other end of the main body 1341, a cantilever 1345 is provided in the second hole 1344, an outer boss 134a and an inner boss 134b are provided on both sides of the end of the cantilever 1345, a first abutment 131a is provided on the inner wall of the shell 131, and a second abutment 135a is provided on the needle fixing seat 135, wherein the outer boss 134a abuts against the first abutment 131a, and the inner boss 134b abuts against the second abutment 135a. Thus, the position locking of the needle assembly in the shell 131 is achieved by the abutment between the outer boss 134a and the first abutment 131a and the abutment between the inner boss 134b and the second abutment 135a. When the needle handle assembly 130 is pushed, the outer boss 134a is disengaged from the first abutment member 131a, and the inner boss 134b is disengaged from the second abutment member 135a, so that the needle assembly can be unlocked and moved.

[0061] Considering that at least one pair of needles is disposed at the distal end of the needle holder 135, each pair of needles here includes a solid needle 119 and a hollow needle 120, the distal end of the solid needle 119 here is fixedly provided with a solid needle head, and the distal end of the hollow needle 120 is detachably connected to the hollow needle head 136, preferably, the solid needle 119 and the hollow needle 120 here are disposed up and down, and the solid needle 119 and the hollow needle 120 can pass through the multi-lumen tube 104 and extend from the distal end of the multi-lumen tube 104 through the movement of the needle assembly. In this embodiment, two solid needles 119 are disposed side by side on the upper side of the needle holder 135, and two hollow needles 120 are disposed side by side on the lower side of the needle holder 135, and each solid needle 119 corresponds to the hollow needle 120 below it.

[0062] The hollow needle tip 136 is pre-set at the distal end of the hollow needle 120. When the needle handle assembly 130 is pushed, the needle push rod 138 on the needle handle assembly 130 is inserted into the proximal end of the hollow needle 120. The needle push rod 138 moves inside the hollow needle 120 and finally pushes the hollow needle tip 136 out of the hollow needle 120.

[0063] The solid needle 119 and the hollow needle 120 are pre-set with sutures 122, wherein one end of the suture 122 is fixed to the solid needle 119 by knotting, and the other end of the suture 122 is connected to the hollow needle head 136 of the corresponding hollow needle 120.

[0064] The diameter of the suture 122 here is 0.1-1mm, and the material of the suture 122 can be absorbable polylactic acid-polyethylene glycol acid copolymer (PLGA), polyglutamic acid copolymer (PLG), polyethylene glycol acid (PGA) and other materials, or it can be non-absorbable polypropylene, nylon, polytetrafluoroethylene and other materials.

[0065] The distal end of the solid needle 119 and the distal end of the hollow needle 120 in the embodiment of the utility model are used to connect the lead wire 118 through the threading part, and the lead wire 118 here can be pre-set on the threading part. Through the connection of the solid needle 119 and the hollow needle 120 with the threading part, the suture 122 can be sutured at a predetermined position.

[0066] Further, the threading portion includes a fixed seat 127, the two ends of which are connected to the multi-lumen tube 104 and the guide tube 101, respectively. At least one sleeve seat 103 is arranged on the fixed seat 127, and the sleeve seat 103 is slidably connected to the fixed seat 127. When there are multiple sleeve seats 103, multiple sleeve seats 103 are arranged side by side and slide together in the fixed seat 127 along the same track. In this embodiment, two sleeve seats 103 are arranged side by side on the fixed seat 127, and the number of the sleeve seats 103 here corresponds to the number of the sutures 122. Of course, more sleeve seats 103 can also be arranged as needed. For example, when three sutures 122 need to be sutured at the bleeding position, three sleeve seats 103 need to be arranged accordingly.

[0067] Specifically, a recess is provided on the fixing seat 127, and the sleeve seat 103 is provided in the recess, and the sleeve seat 103 is confined to slide within the range of the recess through the recess in the fixing seat 127, wherein the rotation axis of the sleeve seat 103 during sliding is perpendicular to the length direction of the fixing seat 127, and the sleeve seat 103 is expanded or closed by sliding on the fixing seat 127, for example, the sleeve seat 103 is opened when threading or suturing is required, and the sleeve seat 103 is closed when suturing is not required so that the sleeve seat 103 is accommodated in the fixing seat 127 and maintains consistency in appearance with other components.

[0068] Furthermore, the sliding of the sleeve seat 103 in the recess can be achieved by operating the wrench 132 on the shell 131. Specifically, the wrench 132 has a rotating shaft 1321, and the rotating shaft 1321 is arranged in the shell 131. The rotating shaft 1321 is connected to the first push-pull member 150, and the first push-pull member 150 is connected to the second push-pull member 151. A push-pull rod 125 is arranged at the far end of the second push-pull member 151, and the push-pull rod 125 is connected to the sleeve seat 103. In this way, the sliding of the sleeve seat 103 can be controlled by operating the wrench 132 through the push-pull rod 125.

[0069] Specifically, the first push-pull member 150 includes a connecting rod 1501 and a connecting shell 1502, a connecting member 1503 is arranged at the end of the connecting rod 1501, and the connecting member 1503 can be, for example, cylindrical, and the connecting rod 1501 is connected to the rotating shaft 1321 through the connecting member 1503; the second push-pull member 151 is arranged in the connecting shell 1502 and can move with the movement of the first push-pull rod 151, a connecting buffer spring 152 is arranged between the second push-pull member 151 and the connecting shell 1502, and the push-pull rod 125 is arranged at the distal end of the second push-pull member 151, and the push-pull rod 125 can pass through the multi-lumen tube 104 and extend from the distal end of the multi-lumen tube 104 to be connected to the sleeve seat 103.

[0070] In this way, the rotation of the wrench 132 drives the first push-pull member 150 to move, thereby driving the second push-pull member 151 to move, and finally driving the sleeve seat 103 to slide through the push-pull rod 125 to achieve the opening or closing of the sleeve seat 103. The push-pull rod 125 here has a diameter of 0.3-1 mm and is generally made of metal materials, such as stainless steel, cobalt-chromium alloy, titanium alloy, zinc alloy, etc.

[0071] Furthermore, the sleeve seat 103 is strip-shaped, and each of the sleeve seats 103 is provided with two mounting holes, and the two mounting holes are respectively arranged near the ends of the sleeve seat 103, and a sleeve is arranged in the mounting hole, and the sleeve here is used to pass the lead 118; a slot 112 is arranged on the edge of the mounting hole, and the sleeve and the slot 112 here are both used to pass the lead 118, wherein the slot 112 is used to limit the lead 118.

[0072] Specifically, in the present embodiment, two sleeve seats 103 are provided, and a first sleeve 113, a second sleeve 114, a third sleeve 115 and a fourth sleeve 116 are provided on the two sleeve seats 103, respectively, wherein the first sleeve 113 and the third sleeve 115 are located on the same sleeve seat 103, with a first lead 118a provided therebetween, and the second sleeve 114 and the fourth sleeve 116 are located on the same sleeve seat 103, with a second lead 118b provided therebetween.

[0073] Here, the solid needle tips fixedly connected at the distal ends of the two solid needles 119 can be inserted into the third sleeve 115 and the fourth sleeve 116 , and the detachably connected hollow needle tips 136 located at the distal ends of the two hollow needles 120 can be inserted into the first sleeve 113 and the second sleeve 114 .

[0074] In addition, at least one wire groove is provided at the distal end of the fixing seat 127, and the wire groove is provided corresponding to the sleeve seat. For example, in this embodiment, the first lead wire 118a passes through the first sleeve 113, is sleeved in the first wire groove 108 of the sleeve seat 103, and then passes through the third sleeve 115; the second lead wire 118b passes through the second sleeve 114, is sleeved in the second wire groove 109 of the sleeve seat 103, and then passes through the fourth sleeve 116. In addition, a sealing ring 107 is provided between the fixing seat 127 and the guide tube 101.

[0075] The solid needle tip or the hollow needle tip 136 here can form a whole with the corresponding sleeve on the sleeve seat 103 after docking. During suturing, the operator operates the handle part 105 to open the sleeve seat 103, pushes the needle handle assembly 130 to make each pair of needles pass through the blood vessel wall and dock with the sleeve. After each pair of needles is connected with the corresponding sleeve, the needles are pulled out so that the sleeve and the suture 122 pass through the prefabricated knot to form a loop, and the suture 122 is tightened to form one or more knots to complete the closure of the puncture port.

[0076] Further, the proximal end of the threading portion is fixedly connected to the multi-lumen tube 104, and a thread channel 142 and a needle channel 104a are provided in the multi-lumen tube 104, and the thread channel 142 and the needle channel 104a are used to respectively set the suture 122 and the solid needle 119 and the hollow needle 120 in the needle assembly. In addition, a bleeding cavity 144 is also provided in the multi-lumen tube 104. Here, the solid needle 119 or the hollow needle 120 passes through the corresponding needle channel 104a. Since the proximal end of the solid needle 119 or the hollow needle 120 is connected to the needle handle assembly 130, the solid needle 119 and the hollow needle 120 can be pushed out of the multi-lumen tube 104 by pushing the needle handle assembly 130 toward the distal end of the needle channel 104a.

[0077] In addition, the guide tube 101 is provided with an exchange guide wire hole 102, wherein the exchange guide wire hole 102 is used to place an exchange guide wire, so as to facilitate the insertion of the multi-needle suture device of this embodiment through the exchange guide wire.

[0078] When suturing a large wound on a patient, the multi-needle suturing device of this embodiment is inserted through the exchange guide wire. When blood continues to flow out of the bleeding cavity 144, the handle portion 105 is controlled to drive the push-pull rod 125 to open the sleeve seat 103, and then the needle handle assembly 130 is pushed to push the multiple pairs of needles out of the multi-lumen tube 104 and dock with the sleeve on the sleeve seat 103. The solid needle 119 and the hollow needle head 136 with the suture 122 are respectively connected to the corresponding sleeve as a whole. When the needle is pulled out toward the proximal end, the solid needle 119 and the hollow needle head 136 with the suture 122 pass through the knot preset on the solid needle 119 and are pulled out of the shell through the multi-lumen tube 104 and the shell 131. Finally, the suture 122 is tightened to complete the suturing of the wound. Here, after multiple stitches are performed, the first stitch 122a and the second stitch 122b formed at the wound 124 on the blood vessel 121 are substantially parallel, and the wound can be sutured by pulling the first stitch 122a and the second stitch 122b.

[0079] The embodiment of the utility model is a vascular suturing device that can effectively sew up a large puncture hole, that is, sew up multiple needles at one time, and has stable and reliable performance, and at the same time has a relatively simple structure and is easy to operate.

[0080] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0081] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0082] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present utility model.

[0083] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0084] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A multi-needle suturing device, characterized in that: It includes a handle part, a multi-lumen tube is arranged at the distal end of the handle part, the distal end of the multi-lumen tube is connected to the guide tube through a threading part, the handle part includes a shell with openings at both ends, a wrench for operating the threading part is arranged on the shell, a needle handle assembly is arranged in the shell, a needle assembly is arranged at the distal end of the needle handle assembly, the needle assembly includes a needle fixing seat, at least one pair of needles is arranged at the distal end of the needle fixing seat, and the needle assembly is controlled to move in the multi-lumen tube by pushing the needle handle assembly until it passes through the distal end of the multi-lumen tube and cooperates with the threading part to realize suturing operation.

2. The multi-needle stapler according to claim 1, characterized in that: The needle handle assembly includes a needle handle and a needle handle lock that are connected to each other. A sleeve rod is provided at the distal end of the needle handle. Clamping pieces are provided on both sides of the sleeve rod. A limit piece is provided at the distal end of the sleeve rod. The end of the sleeve rod is connected to the needle push rod. The needle fixing seat is provided in the needle handle lock. A driving spring is provided in the needle fixing seat. The driving spring is sleeved on the sleeve rod and limited by the limiting piece.

3. The multi-needle stapler according to claim 2, characterized in that: The needle handle lock includes a frame-type main body, a first hole is provided at one end of the main body, a snap-in groove is provided on the inner wall of the first hole, the snap-in piece is snap-fitted with the snap-in groove to realize the connection between the needle handle and the needle handle lock, a second hole is provided at the other end of the main body, a cantilever is provided in the second hole, an outer boss and an inner boss are respectively provided on both sides of the end of the cantilever, a first abutment is provided on the inner wall of the outer shell, a second abutment is provided on the needle fixing seat, the outer boss abuts with the first abutment, and the inner boss abuts with the second abutment.

4. The multi-needle stapler according to claim 2, characterized in that: Each pair of needles includes a solid needle and a hollow needle arranged up and down, the solid needle head is fixedly arranged at the distal end of the solid needle, and the hollow needle head is detachably connected to the distal end of the hollow needle. Sutures are pre-arranged on the solid needle and the hollow needle, one end of the suture is fixed on the solid needle, and the other end of the suture is connected to the hollow needle head of the corresponding hollow needle, and when the needle handle assembly is pushed, the needle push rod is inserted into the proximal end of the hollow needle and pushes the hollow needle head out of the hollow needle.

5. The multi-needle stapler according to claim 4, characterized in that: The proximal end of the threading portion is fixedly connected to the multi-lumen tube, and a wire channel and a needle channel are arranged in the multi-lumen tube. The wire channel and the needle channel are respectively used to set the suture and the solid needle and the hollow needle in the needle assembly. The guide tube is provided with an exchange guide wire hole, and the exchange guide wire hole is used to place the exchange guide wire.

6. The multi-needle stapler according to claim 1, characterized in that: The threading portion includes a fixed seat, two ends of which are respectively connected to the multi-lumen tube and the guide tube, at least one sleeve seat is arranged on the fixed seat, a recess is arranged on the fixed seat, and the sleeve seat is arranged in the recess, and the recess in the fixed seat allows the sleeve seat to slide within the range of the recess.

7. The multi-needle stapler according to claim 6, characterized in that: When there are multiple sleeve seats, the multiple sleeve seats are arranged side by side and slide together in the fixing seat along the same track.

8. The multi-needle stapler according to claim 6, characterized in that: The wrench has a rotating shaft, which is arranged in the shell, the rotating shaft is connected to a first push-pull member, the first push-pull member is connected to a second push-pull member, a push-pull rod is arranged at the far end of the second push-pull member, and the push-pull rod is connected to the sleeve seat, so that the sliding of the sleeve seat can be controlled by operating the wrench through the push-pull rod.

9. The multi-needle stapler according to claim 8, characterized in that: The first push-pull member includes a connecting rod and a connecting shell, a connecting member is arranged at the end of the connecting rod, and the connecting rod is connected to the rotating shaft through the connecting member; the second push-pull member is arranged in the connecting shell and can move with the movement of the first push-pull member, a connecting buffer spring is arranged between the second push-pull member and the connecting shell, and the push-pull rod is arranged at the distal end of the second push-pull member.

10. The multi-needle stapler according to claim 6, characterized in that: Two mounting holes are arranged on the sleeve seat, and the two mounting holes are arranged close to the ends of the sleeve seat respectively. A sleeve is arranged in the mounting hole, and the sleeve is used to pass the lead wire. At least one wire groove is arranged at the distal end of the fixing seat, and the wire groove is arranged corresponding to the sleeve seat.

Images