Clamping device

Abstract

The present invention discloses a clamping device. The clamping device includes a clamping assembly, a traction assembly and a puncture assembly. The clamping assembly includes a first clamping element and a second clamping element, and the first clamping element and the second clamping element are hinged to each other through a first hinge axis; the traction assembly includes a first traction element, and the first traction element is used to pull the first clamping element and the second clamping element so that the first clamping element and the second clamping element rotate around the first hinge axis respectively; the puncture assembly includes a first needle body installed on the first clamping element and a second needle body installed on the second clamping element. The clamping device in the present invention is equipped with a puncture assembly, so it has the characteristics of strong clamping force and firm clamping.

Description

Technical Field

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

[0002] At present, during endoscopic surgery, the diseased tissue needs to be clamped and lifted up to fully expose the surgical field of view, reduce surgical complications and improve the success rate of the operation; during endoscopic foreign body removal in the digestive tract, the foreign body is clamped and then removed from the digestive tract lumen; during endoscopic ligation of submucosal tumors in the digestive tract, the submucosal tumor is clamped and lifted, and then the base of the submucosal tumor is ligated with an endoscopic ligation device to cause ischemia and necrosis of the submucosal tumor or the tumor is directly removed after ligation. Not limited to the above surgical methods, the endoscopic clamping method has been widely used in daily endoscopic surgery and has played an important role.

[0003] However, for flexible endoscopic surgery, the choice of clamping instruments is limited and the clamping effect is poor. In flexible digestive endoscopic surgery, the main uses of biopsy forceps and endoscopic clamps are tissue biopsy and mucosal defect closure, respectively, and they can also be used as clamps. However, the clamping force is poor and unreliable; the foreign body forceps itself is a clamping piece, which is mainly used to clamp foreign bodies after the patient accidentally swallows foreign bodies to remove foreign bodies from the digestive tract lumen, but for some targets with smooth surfaces and large sizes, the clamping effect is poor. For example, the submucosal tumor of the digestive tract is located in the submucosal layer, the tumor texture is hard and the surface is smooth, and it is easy to slip after clamping. Summary of the invention

[0004] The main purpose of the present invention is to provide a clamping device, which makes the clamping more reliable and improves the clamping effect.

[0005] An embodiment of the present invention provides a clamping device. The clamping device comprises:

[0006] A clamping assembly, the clamping assembly comprising a first clamping element and a second clamping element, the first clamping element and the second clamping element being hinged to each other via a first hinge axis;

[0007] a traction assembly, the traction assembly comprising a first traction element, the first traction element being used to pull the first clamping element and the second clamping element so that the first clamping element and the second clamping element respectively rotate around a first hinge axis; and

[0008] The puncture assembly includes a first needle body located on the first clamping element and a second needle body located on the second clamping element.

[0009] In some embodiments, the first hinge axis divides the first clamping element into a first clamping portion and a second clamping portion, and the first hinge axis divides the second clamping element into a third clamping portion and a fourth clamping portion, at least a portion of the first clamping portion serves as a first needle seat, and at least a portion of the third clamping portion serves as a second needle seat, the first needle body is hinged to the first needle seat, and the second needle body is hinged to the second needle seat.

[0010] In some embodiments, the pulling assembly further includes a second pulling element, and the second pulling element is used to pull the first needle body and the second needle body so that the first needle body and the second needle body rotate respectively.

[0011] In some embodiments, each of the first needle seat and the second needle seat is provided with a second hinge shaft at one end, and an elastic element is sleeved on the second hinge shaft.

[0012] In some embodiments, the first needle body and the second needle body are provided with a clearance groove at one end away from the needle tip, and the clearance groove is for the elastic element to pass through.

[0013] In some embodiments, cross-sections of the first needle hub and the second needle hub are C-shaped.

[0014] In some embodiments, the first needle body and the second needle body have a multi-needle tip structure.

[0015] In some embodiments, the second pulling element and the puncture assembly both contain conductive materials.

[0016] In some embodiments, the clamping device further includes a supporting assembly, and a side surface of the supporting assembly is provided with a through hole for the first hinge shaft to pass through and a through groove for accommodating the first clamping element and the second clamping element.

[0017] In some embodiments, the clamping device further comprises a shell, wherein the shell is located below the supporting assembly, and the traction assembly passes through the interior of the shell.

[0018] The technical solution in the embodiment of the present invention has at least the following technical effects: the clamping device has a puncture assembly that can pierce the clamped object, thereby having the advantages of strong clamping force and firm clamping.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1is a schematic diagram of the structure of the clamping device in some embodiments of the present invention, wherein the second needle body is a disassembled structure, and Figure 1 The handle assembly is not shown;

[0021] Figure 2 is a schematic diagram of the exploded structure of the clamping device in some embodiments of the present invention, Figure 2 The handle assembly is not shown;

[0022] Figure 3 for Figure 1 A schematic diagram of the local enlarged structure of the middle A area;

[0023] Figure 4 is a schematic diagram of the structure of the first needle body or the second needle body in some embodiments of the present invention, wherein Figure 4 (a), (b) and (c) represent the structures at different viewing angles respectively;

[0024] Figure 5 is a schematic diagram of the structure of the first needle body or the second needle body in some other embodiments of the present invention, wherein Figure 5 (a), (b) and (c) represent the structures at different viewing angles respectively;

[0025] Figure 6 is a schematic diagram of the structure of the first clamping element or the second clamping element in some embodiments of the present invention, wherein Figure 6 (a), (b) and (c) represent the structures at different viewing angles respectively;

[0026] Figure 7 is a schematic diagram of the structure of the first clamping element or the second clamping element in some embodiments of the present invention, wherein Figure 7 (b) is Figure 7 A schematic diagram of the local enlarged structure of region B in (a);

[0027] Figure 8 is a schematic diagram of the structure of the handle assembly in some embodiments of the present invention, wherein Figure 8 (a) and (b) represent the structures at different viewing angles respectively;

[0028] Fig. 9 is a schematic diagram of the exploded structure of the handle assembly in some embodiments of the present invention, wherein Fig. 9 (a) and (b) represent the structures at different viewing angles respectively;

[0029] Fig.10 is a schematic diagram of the exploded structure of the handle assembly in some embodiments of the present invention, wherein Fig.10 (a) and (b) respectively represent the storage state and the working state.

[0030] In the figure, 10-clamping device; 110-first clamping element, 111-first clamping part, 112-second clamping part, 120-second clamping element, 121-third clamping part, 122-fourth clamping part, 130-first hinge axis, 150-first needle seat, 160-second needle seat, 170-elastic element, 171-second hinge axis, 172-limiting part, 173-ear part; 210-first traction element, 220-second traction element, 230-insulating tube; 310-first needle body, 320-second needle body, 330-yielding groove; 400-support assembly, 410-through hole, 420-through groove; 500-shell; 600-connecting element; 700-handle assembly, 710-first control ring, 720-second control ring, 730-fixing ring. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection and a movable connection, a detachable connection and a non-detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication. "Fixed connection" includes detachable connection, non-detachable connection, and integral connection, etc.

[0034] In the present invention, terms such as "first" or "second" are used for descriptive purposes only and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features.

[0035] The technical solutions between the various embodiments of the present invention can be combined with each other. It should be noted that the embodiments described below are partial embodiments rather than all embodiments. The components of the embodiments generally described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] See also Figure 1 and Figure 2 In some embodiments, the clamping device 10 includes a clamping assembly, a pulling assembly, and a puncture assembly. The puncture assembly is fixedly connected to the clamping assembly, and the pulling assembly can at least pull the clamping assembly to rotate.

[0037] The clamping assembly includes a first clamping element 110 and a second clamping element 120 . The first clamping element 110 and the second clamping element 120 are hinged to each other via a first hinge shaft 130 . The first clamping element 110 and the second clamping element 120 both have a first end and a second end.

[0038] The traction assembly includes a first traction element 210 , and the first traction element 210 is used to pull the first clamping element 110 and the second clamping element 120 , so that the first clamping element 110 and the second clamping element 120 rotate around the first hinge shaft 130 , respectively.

[0039] The puncture assembly includes a first needle 310 mounted on the first clamping element 110 and a second needle 320 mounted on the second clamping element 120 .

[0040] As mentioned above, in medical surgery, the use of traditional clamping components to clamp smooth mucosal tissue and hard lesions is often ineffective - they are easy to slip off after clamping. The clamping device in this embodiment is equipped with a puncture component, and the user can use the puncture component to pierce the clamped object, making it difficult to slip off, thereby having the advantages of firm clamping and strong clamping force.

[0041] Please continue reading Figure 1 and Figure 2 In some embodiments, the first hinge axis 130 divides the first clamping element 110 into a first clamping portion 111 and a second clamping portion 112, and the first hinge axis 130 divides the second clamping element 120 into a third clamping portion 121 and a fourth clamping portion 122. At least a portion of the first clamping portion 111 serves as a first needle seat 150, and at least a portion of the third clamping portion 121 serves as a second needle seat 160. The first needle body 310 is hinged to the first needle seat 150, and the second needle body 320 is hinged to the second needle seat 160. At least a portion of the second clamping portion 112 serves as a rotating arm, and at least a portion of the fourth clamping portion 122 serves as a rotating arm.

[0042] The first needle body is hinged on the first clamping element and the second needle body is hinged on the second clamping element, so that the clamping device can not only adjust the angle between the first clamping element and the second clamping element, but also rotate the needle body relative to the corresponding clamping element by a certain angle. Therefore, the entire clamping device can select a more suitable angle to pierce the clamped object, thereby further facilitating the clamping operation.

[0043] Please continue reading Figure 1 and Figure 2 In some embodiments, the traction assembly further includes a second traction element 220, and the second traction element 220 is used to pull the first needle body 310 and the second needle body 320 so that the first needle body 310 and the second needle body 320 rotate respectively.

[0044] The second pulling element can pull the first needle body to rotate relative to the first clamping element, and pull the second needle body to rotate relative to the second clamping element. The user does not need to touch the needle body to drive it to rotate, which is convenient for the user to operate and can also avoid user injury. After the clamping operation is completed, the first needle body and the second needle body can be folded. After folding, the maximum outer diameter of the clamping assembly is smaller, so it is convenient to directly enter and exit from the working channel of the endoscope, thereby improving the efficiency of use.

[0045] See also Figures 1 to 3 as well as Figure 7 In some embodiments, the first needle seat 150 and the second needle seat 160 are provided with a second hinge shaft 171 at one end, and an elastic element 170 is sleeved on the second hinge shaft 171. Specifically, the elastic element is a torsion spring. It is understandable that the elastic element can also be other springs, or rubber and other components that have elasticity themselves.

[0046] A second hinge shaft 171 is provided at the end away from the needle tip (i.e., the root of the needle body) and an elastic element 170 is sleeved on the second hinge shaft 171, so that the restoring force of the elastic element itself can be used as a driving force for the needle body to be unfolded from the needle seat, making it easier for users to use the puncture assembly. The elastic element and the second traction element cooperate with each other to control the opening and closing of the first needle body and the second needle body.

[0047] In some embodiments, the clamping device 10 has no elastic element, and controls the opening and closing of the first needle body 310 and the second needle body 320 through the second pulling element 220 .

[0048] See also Figure 4 In some embodiments, the first needle body 310 and the second needle body 320 are provided with a clearance groove 330 at one end away from the needle tip, and the clearance groove 330 is for the elastic element 170 to pass through. Figure 1 and Figure 2 As shown, the clearance groove 330 is located at the root of the needle body and extends along the axial direction of the needle body. The clearance groove 330 is a rectangular through groove, which intersects with the bottom of the needle body, so that the side of the needle body presents a rectangular notch.

[0049] Figure 4 It is also shown that the interior of the needle body is a hollow structure. The entire needle body is a curved arc segment, not a straight line segment. It can be understood that, according to needs, the interior of the needle body can also be set to a solid structure or a structure that is an entire straight line segment.

[0050] The provision of the clearance groove facilitates the disassembly and assembly of the elastic element, and ensures that the elastic element does not encounter additional resistance when switching between the two states of winding (or compression) and stretching (or unfolding). In addition, the provision of the clearance groove also increases the space for installing the elastic element, so that the clamping device can install a larger elastic element (such as a torsion spring), thereby facilitating manufacturing and processing and ensuring greater elasticity and elasticity.

[0051] See also Figure 5 In some embodiments, the first needle body 310 and the second needle body 320 have a multi-needle tip structure. "Multi-needle tip" means that the end of a needle body has at least two needle tips. Specifically, Figure 5 As shown, the first needle body 310 and the second needle body 320 both have double needle tip structures.

[0052] The multi-needle tip structure can further improve the clamping force and the firmness of the clamping, so that the clamped object is not easy to slip out from between the clamping elements.

[0053] See also Figure 6 and Figure 7 In some embodiments, the cross-sections of the first needle seat 150 and the second needle seat 160 are C-shaped. Figure 6 and Figure 7 As shown, the cross section of the needle holder is an integrally formed C-shape. It is understandable that the needle holder can also be a C-shaped cross section structure formed by splicing a bottom plate and two side walls. The needle holder can also be other structures that can effectively shield the needle tip of the needle body.

[0054] The needle holder structure with a C-shaped cross section ensures that when the needle body is stored inside the needle holder, both the left and right sides of the needle body are shielded and protected to avoid injury to the user.

[0055] Please continue reading Figure 6 and Figure 7 In some embodiments, the first needle seat 150 and the second needle seat 160 are further provided with a lug 173 and a stopper 172 at one end provided with the second hinge shaft 171. The stopper 172 is used to limit the rotation angle range of the needle body relative to the needle seat, to prevent the user from being injured by excessive rotation angle. The lug 173 is used to provide necessary shielding for the needle body in the area where it is hinged with the needle seat, to prevent the needle body from causing accidental injury to the user.

[0056] See also Figure 8 and Fig. 9In some embodiments, the clamping device 10 further includes a handle assembly 700. The handle assembly 700 has a first control ring 710, a second control ring 720, and a fixing ring 730. The handle assembly 700 is located at the lower part of the clamping device 10. When the user uses it, different fingers can be inserted into the first control ring 710 and the second control ring 720 respectively. Figure 8 and Fig. 9 As shown, the first control ring 710 is fixedly connected to the second pulling element 220, and the second control ring 720 is fixedly connected to the first pulling element 210. It can be understood that the first control ring 710 can also be fixedly connected to the first pulling element 210, and the second control ring 720 is fixedly connected to the second pulling element 220. By manipulating the first control ring and the second control ring with different fingers, the user can control the first pulling element and the second pulling element, and then respectively control the relative rotation angle between the two clamping elements and the rotation angle of the needle body relative to the needle seat.

[0057] In some embodiments, the second pulling element 220 and the puncture assembly both contain conductive materials. Specifically, the second pulling element 220 and the puncture assembly are both made of conductive metal.

[0058] In some embodiments, an insulating layer is provided on the outer layer of the second pulling element 220. Specifically, the insulating layer is an insulating coating or a thin tube. The provision of the insulating layer avoids interfering with the work of other parts and components (such as the first pulling element 210) during the power-on process.

[0059] The traction component and the puncture component made of conductive material can be electrified. The traction component is connected to the puncture component, so that the current can flow through the two. After electrification, the needle body is more likely to penetrate the mucosal tissue (especially the harder tissue), and the puncture effect is better, so that the clamping force of the clamping device is further enhanced.

[0060] Please continue reading Figure 1 and Figure 2 In some embodiments, the clamping device further comprises a support assembly 400, and a through hole 410 for the first hinge shaft 130 to pass through and a through slot 420 for receiving the first clamping element 110 and the second clamping element 120 are provided on the side of the support assembly 400. Figure 1 and Figure 2 As shown, two side surfaces of the supporting assembly respectively have a notch, namely a through groove.

[0061] The support assembly is provided with a through hole for the first hinge shaft to pass through, so that the first hinge shaft can be installed on the support assembly. The support assembly is provided with a through slot to accommodate the clamping element; furthermore, the through slot means that the expansion and storage of the clamping element will not be blocked.

[0062] Please continue reading Figure 1and Figure 2 In some embodiments, the clamping device 10 further includes a housing 500, the housing 500 is located below the supporting assembly 400, and the traction assembly passes through the interior of the housing 500. The housing plays a role of protecting and guiding the traction assembly.

[0063] Please continue reading Figure 1 and Figure 2 In some embodiments, an insulating tube 230 made of insulating material is placed inside the housing 500. Specifically, Figure 1 and Figure 2 As shown, the housing 500 is tubular. An insulating tube 230 made of insulating material is placed inside the housing 500. The first traction element 210 and the second traction element 220 are both located in the insulating tube 230 and are wrapped and protected by the insulating tube 230. It can be understood that the housing 500 can also be set to other shapes as needed.

[0064] Figure 1 and Figure 2 It is also shown that the support assembly 400 is connected to the housing 500 via a connecting element 600. Both ends of the connecting element 600 are provided with external threads, and the ends of the support assembly 400 and the housing 500 are respectively provided with internal threads. It is understandable that both ends of the connecting element can also be provided with internal threads, or one end is provided with internal threads and the other end is provided with external threads. Through the threaded connection, the connecting element 600 connects the support assembly 400 to the housing 500.

[0065] The following text will be combined Fig.10 The operation method of the clamping device in the present invention is described. The operation steps are as follows:

[0066] Step 1: Place the puncture assembly and the folded and combined clamping assembly into the surgical operation site through the endoscope working channel or the natural orifice of the human body;

[0067] Step 2: Use the handle assembly 700 to manipulate the traction assembly to open the first clamping element 110 and the second clamping element 120, as well as the corresponding needle body. According to the size of the clamped target mucosal tissue, adjust the angle between the first clamping portion 111 of the first clamping element 110 and the third clamping portion 121 of the second clamping element 120, and adjust the angle between the first needle body 310 and the first needle seat 150, and the angle between the second needle body 320 and the second needle seat 160, so that the needle tips of the first needle body 310 and the second needle body 320 are clamped at the appropriate position of the lesion, thereby facilitating clamping and lifting. For some target mucosal tissues that are thicker and harder, the needle body can be energized to assist clamping;

[0068] Step 3: After clamping the target mucosal tissue, outside the human body, pull the handle side of the clamping assembly to lift up the target mucosal tissue;

[0069] Step 4: After the clamping operation is completed, the traction assembly is pulled back through the handle assembly 700 to drive the first needle body 310 to move closer to the first needle seat 150, the second needle body 320 to move closer to the second needle seat 160, and the first clamping element 110 and the second clamping element 120 to close.

[0070] Step 4: Remove the clamping assembly from the human body in its entirety.

[0071] It is understandable that the application of the clamping device in the present invention is not limited to the clamping of the target object during surgery, but can also be applied to other endoscopic surgeries.

[0072] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A clamping device, characterized in that: include: A clamping assembly, the clamping assembly comprising a first clamping element and a second clamping element, the first clamping element and the second clamping element being hinged to each other via a first hinge axis; A traction assembly, the traction assembly comprising a first traction element, the first traction element being used to pull the first clamping element and the second clamping element so that the first clamping element and the second clamping element respectively rotate around the first hinge axis; as well as The puncture assembly comprises a first needle body mounted on the first clamping element and a second needle body mounted on the second clamping element, the first hinge axis divides the first clamping element into a first clamping portion and a second clamping portion, the first hinge axis divides the second clamping element into a third clamping portion and a fourth clamping portion, at least a portion of the first clamping portion serves as a first needle seat, and at least a portion of the third clamping portion serves as a second needle seat, the first needle body is hinged to the first needle seat, and the second needle body is hinged to the second needle seat, the traction assembly further comprises a second traction element, the second traction element is used to pull the first needle body and the second needle body so that the first needle body and the second needle body rotate respectively, the first needle seat and the second needle seat are provided with a second hinge axis at one end, and an elastic element is sleeved on the second hinge axis.

2. The clamping device according to claim 1, characterized in that: The first needle body and the second needle body are provided with a clearance groove at one end away from the needle tip, and the clearance groove is used for the elastic element to pass through.

3. The clamping device according to claim 1, characterized in that: The cross sections of the first needle seat and the second needle seat are C-shaped.

4. The clamping device according to claim 1, characterized in that: The first needle body and the second needle body have a multi-needle tip structure.

5. The clamping device according to claim 3, characterized in that: The second pulling element and the puncture assembly both contain conductive materials.

6. The clamping device according to claim 1, characterized in that: The clamping device further comprises a supporting assembly, and a through hole for the first hinge shaft to pass through and a through groove for accommodating the first clamping element and the second clamping element are arranged on a side surface of the supporting assembly.

7. The clamping device according to claim 6, characterized in that: The clamping device also includes a shell, which is located below the supporting assembly, and the traction assembly passes through the interior of the shell.

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