Clamp instrument

Abstract

The embodiment of the invention provides a clip instrument which comprises a clamping device, the clamping device comprises a clip and a storage tube, and the near end of the clip is stored in the storage tube; the conveying device comprises a sheath tube provided with a channel and a core shaft which moves in the channel of the sheath tube in the axial direction of the sheath tube, and the core shaft is in releasable connection with the clamp. Wherein the storage tube comprises a connection locking part, the clamp comprises a locked part, and the far end of the conveying device comprises a connection part; when the connecting part is matched with the connecting locking part, the conveying device is connected with the clamping device; when the matching between the connecting part and the connecting locking part is released, the connection between the conveying device and the clamping device is released; when the connecting and locking part is matched with the locked part, the clamping device is locked; and when the matching between the connecting locking part and the locked part is released, the clamping device is unlocked.

Description

Cross-references This application claims priority to Chinese patent application CN2023112552882, filed on September 26, 2023, entitled “A clamp device”, the entire contents of which are incorporated herein by reference. Technical Field

[0001] The present specification relates to the field of medical devices, and in particular to a clamp device. Background Art

[0002] Endoscopes have been around for more than 50 years, and have gone through the stages from disease diagnosis to disease treatment. They are very effective and reliable for the treatment of some diseases. Among them, flexible endoscopes have been widely used in the fields of digestion, gynecology, urology, respiratory tract, and cardiovascular and cerebrovascular diseases because they do not require surgical laparotomy and are minimally invasive. At the same time, technical requirements for miniaturization, operability, and high flexibility are put forward for surgical instruments that cooperate with flexible endoscopes. The stomach and intestines of organisms often cause bleeding or mucosal damage or even perforation due to various diseases or accidental injuries or injuries during endoscopic diagnosis and treatment. In clinical practice, mechanical compression can be used to stop bleeding through a clip device. The clip device can grab the tissue around the wound and temporarily hold the wound edges together to close the wound. It is also used for wound suture. However, the clip part of the clip device commonly used in existing clinical surgeries is basically not replaceable, and the delivery part can only be used once, which leads to high surgical costs. Even if the clip part of some clip devices can be replaced, there is still a problem that the clip part cannot be opened and closed repeatedly, which makes it impossible for the operator to make corrections in the case of a clamping error, which brings inconvenience to rapid hemostasis.

[0003] Therefore, it is necessary to provide a clamp device, so that the delivery part can be reused, and the clamp part has a repeatable opening and closing function, which can reduce the cost of surgery and bring convenience to clinical rapid hemostasis. Summary of the invention

[0004] One or more embodiments of the present specification provide a clamp instrument, which includes: a clamping device, which includes a clamp and a storage tube, and the proximal end of the clamp is stored in the storage tube; a conveying device, which includes a sheath tube provided with a channel and a core shaft that moves axially along the sheath tube in the channel of the sheath tube, and the core shaft is releasably connected to the clamp; wherein the storage tube includes a connecting locking portion, the clamp includes a locked portion, and the distal end of the conveying device includes a connecting portion; when the connecting portion cooperates with the connecting locking portion, the conveying device is connected to the clamping device; when the cooperation between the connecting portion and the connecting locking portion is released, the connection between the conveying device and the clamping device is released; when the connecting locking portion cooperates with the locked portion, the clamping device is locked; when the cooperation between the connecting locking portion and the locked portion is released, the clamping device is unlocked.

[0005] One or more embodiments of the present specification provide a clamp instrument, which includes: a clamping device, the clamping device includes a clamp and a storage tube, the proximal end of the clamp is stored in the storage tube; a conveying device, the conveying device includes a sheath tube provided with a channel and a core shaft that moves axially along the sheath tube in the channel of the sheath tube, and the core shaft is releasably connected to the clamp; wherein, the clamp includes a connecting ring, a spring sheet is provided at the distal end of the connecting ring, the proximal end of the spring sheet is connected to the connecting ring, and the distal end of the spring sheet extends obliquely inward along the radial direction of the connecting ring; when the spring sheet cooperates with the core shaft, the clamp is connected to the core shaft; when the spring sheet is released from the core shaft, the connection between the clamp and the core shaft is released; when the spring sheet cooperates with the core shaft, the core shaft can transmit torque to the spring sheet. According to the above scheme, the delivery device of the clamp instrument can be reused, the clamping device includes a plurality of clamping devices, and the clamping device is disposable; the clamping device and the delivery device are connected and assembled into a clamp instrument. The clamping device includes a first clamping device and a second clamping device, the first clamping device includes a first clamp and a first receiving tube, and the proximal end of the first clamp is received in the first receiving tube; the second clamping device includes a second clamp and a second receiving tube, and the proximal end of the second clamp is received in the second receiving tube; the first clamping device and the delivery device can be releasably connected, and the second clamping device and the delivery tube can be releasably connected.

[0006] At the same time, the clamping device has a repeatable opening and closing function, which can reduce surgical costs and bring convenience to clinical rapid hemostasis. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] This specification will be further described in the form of exemplary embodiments, which will be described in detail by the accompanying drawings. These embodiments are not restrictive, and in these embodiments, the same number represents the same structure, wherein:

[0008] Figure 1 is an exemplary structural diagram of a clip device according to some embodiments of the present specification;

[0009] Figure 2 is an exemplary structural diagram of a delivery device according to some embodiments of this specification;

[0010] Figure 3 is an exemplary structural diagram of a clamping device according to some embodiments of this specification;

[0011] Figure 4 is an exemplary structural diagram of a clip according to some embodiments of this specification;

[0012] Figure 5 is an exemplary cross-sectional view of a clip along the AA section line according to some embodiments of the present specification;

[0013] Figure 6 is an exemplary cross-sectional view of a clamping device along section line EE according to some embodiments of the present specification;

[0014] Figure 7 is an exemplary structural diagram of a storage tube according to some embodiments of this specification;

[0015] Figure 8 is an exemplary structural diagram before the connection part and the connection locking part are matched according to some embodiments of this specification;

[0016] Fig. 9 is an exemplary cross-sectional view of the connecting portion and the connecting locking portion during the cooperation process according to some embodiments of this specification;

[0017] Fig.10 is an exemplary cross-sectional view of the connection portion and the connection locking portion after being matched according to some embodiments of this specification;

[0018] Fig.11 is an exemplary structural diagram of a connection terminal according to some embodiments of this specification;

[0019] Fig.12 is an exemplary cross-sectional view of a connection end before mating with a connection locking portion according to some embodiments of the present specification;

[0020] Fig.13 is an exemplary structural diagram of region I shown in some embodiments of this specification;

[0021] Fig.14 is an exemplary cross-sectional view of a connection end and a connection locking portion after being matched according to some embodiments of this specification;

[0022] Fig.15 is an exemplary structural diagram of region II according to some embodiments of this specification;

[0023] Fig.16 is an exemplary schematic diagram of a clip in an open state according to some embodiments of this specification;

[0024] Fig.17 is an exemplary structural diagram of a clip in a closed state according to some embodiments of this specification;

[0025] Fig.18 is an exemplary cross-sectional view of the connection portion and the connection locking portion being released from the engagement according to some embodiments of the present specification;

[0026] Fig.19 is an exemplary structural diagram of region III according to some embodiments of this specification;

[0027] Fig. 20 is an exemplary structural diagram of IV shown in some embodiments of this specification.

[0028] The reference numerals are: clamp device 10; control device 100; fixed handle 110; sliding handle 120; conveying device 200; connecting portion 210; limiting surface 210-1; limiting step 210-2; connecting step 210-3; guiding inclined surface 210-4; connecting end 220; inclined surface 220-1; connecting rod step surface 220-2; rotating limiting structure 220-3; small diameter portion 220 -4; large diameter portion 220-5; core shaft 230; sheath tube 240; clamping device 300; storage tube 310; elastic cantilever 310-1; connecting locking portion 310-2; limiting plate 310-3; clamp 320; first clamp arm 320-1; second clamp arm 320-2; connecting ring 320-3; spring piece 320-4; locked portion 320-5; spring piece end face 320-6; matching step 320-7. DETAILED DESCRIPTION

[0029] In order to more clearly illustrate the technical solutions of the embodiments of this specification, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some examples or embodiments of this specification. For ordinary technicians in this field, this specification can also be applied to other similar scenarios based on these drawings without creative work. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0030] It should be understood that the "system", "device", "unit" and / or "module" used herein are a method for distinguishing different components, elements, parts, portions or assemblies at different levels. However, if other words can achieve the same purpose, the words can be replaced by other expressions.

[0031] As shown in this specification and claims, unless the context clearly indicates an exception, the words "a", "an", "an" and / or "the" do not refer to the singular and may also include the plural. Generally speaking, the terms "comprise" and "include" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0032] Flowcharts are used in this specification to illustrate the operations performed by the system according to the embodiments of this specification. It should be understood that the preceding or following operations are not necessarily performed precisely in order. Instead, the steps may be processed in reverse order or simultaneously. At the same time, other operations may also be added to these processes, or one or more operations may be removed from these processes.

[0033] Figure 1 is an exemplary structural diagram of a clamp device according to some embodiments of this specification. Figure 1 As shown, some embodiments of the present specification provide a clamp instrument 10, which can be applied to a medical endoscope to perform operations such as clamping, hemostasis, and suturing during endoscopic surgery.

[0034] In some embodiments, the clamp device 10 includes a clamping device 300, a conveying device 200, and a control device 100. The control device 100 is disposed at the proximal end of the conveying device 200, and the clamping device 300 is disposed at the distal end of the conveying device 200. The "proximal end" and "distal end" involved in the embodiments of this specification may indicate directions, with the side facing the operator being the "proximal end" and the side facing the side extending into the human body for treatment being the "distal end"; the "proximal end" and "distal end" may also indicate partial structures located in the corresponding directions, and should not be understood as indicating only the ends.

[0035] The control device refers to a component used to control the opening, closing, locking and / or releasing of the clamping device. The control device 100 is composed of a fixed handle 110 and a sliding handle 120. The sliding handle 120 can slide axially relative to the fixed handle 110. The distal end of the sliding handle 120 is fixedly connected to the proximal end of the core shaft 230. The user controls the sliding handle 120 to move along the axial direction of the fixed handle 110 in vitro, thereby controlling the axial movement of the core shaft 230 in the channel of the sheath 240, so that the clamping device 300 completes the corresponding surgical operation. Among them, the "axial" and "radial" involved in the embodiments of this specification can represent directions, and the "radial" direction is perpendicular to the "axial" direction, or the axial direction is the extension direction of the channel of the sheath 240, and the radial direction is perpendicular to the extension direction of the channel of the sheath 240.

[0036] The conveying device refers to a component used to convey the clamping device into the human body or other organisms. The conveying device 200 has good passability, and the conveying device 200 and the clamping device 300 can enter the human body or other organisms through the working channel of the endoscope to approach the tissue to be clamped. Among them, the tissue refers to the organ tissue of the human body or other organisms.

[0037] In some embodiments, the distal end of the delivery device 200 includes a connection portion 210 .

[0038] The connecting part refers to the structural part that connects the conveying device and the clamping device after cooperating with the connecting locking part. For more information about the connecting part, please refer to Figure 8 and its related description.

[0039] In some embodiments, Figure 2 As shown, the delivery device 200 includes a sheath tube 240 having a channel and a core shaft 230 that moves in the channel of the sheath tube 240 along the axial direction of the sheath tube 240 .

[0040] The sheath tube refers to an outer sleeve for protecting the mandrel. In some embodiments, the sheath tube 240 is flexible and can be bent in any direction.

[0041] The mandrel refers to a shaft used to bear and transmit loads (eg, loads from the control device 100). In some embodiments, the clamping device 300 is disposed at the distal end of the sheath 240, and the mandrel 230 is used to control the clamping device 300 to perform operations such as opening, closing, locking and / or releasing.

[0042] In some embodiments, the mandrel 230 is releasably connected to the clip. In the embodiments of this specification, "releasably connected" means that the connection between the two components remains connected when the conditions are met (for example, when the direction of the external force is from the proximal end to the distal end), and is released and separated from each other when the conditions are not met (for example, when the direction of the external force is from the distal end to the proximal end). For more information about the releasable connection between the mandrel and the clip, please refer to Figure 12-15 and its related description.

[0043] The clamping device refers to a component used to clamp tissue. The clamping device 300 can perform operations such as opening, closing, locking and / or releasing. For example, the clamping device 300 can clamp a wound of tissue to keep the wound closed so as to facilitate wound healing.

[0044] In some embodiments, Figure 3 As shown, the clamping device 300 includes a clamp 320 and a receiving tube 310 , and the proximal end of the clamp 320 is received in the receiving tube 310 .

[0045] A clip refers to a structural member used to clamp tissue. In some embodiments, the clip 320 includes a locked portion 320 - 5 .

[0046] The locked part refers to a structural member that locks the clamping device after cooperating with the connecting locking part.

[0047] In some embodiments, Figure 4 and Figure 5 As shown, the clip 320 includes a first clip arm 320-1, a second clip arm 320-2 and a connecting ring 320-3. The proximal ends of the first clip arm 320-1 and the second clip arm 320-2 are connected to the connecting ring 320-3, and the distal end of the connecting ring 320-3 is provided with a spring piece 320-4, the proximal end of the spring piece 320-4 is connected to the connecting ring 320-3, and the distal end of the spring piece 320-4 extends obliquely inwardly along the radial direction of the connecting ring, and the locked portion 320-5 is provided on the connecting ring 320-3.

[0048] The connecting ring refers to a structural member used to connect the first clamp arm and the second clamp arm. In some embodiments, the connecting ring 320 - 3 may include a circular ring structure. The connecting ring 320 - 3 is received in the receiving tube 310 .

[0049] In some embodiments, the first clamp arm 320 - 1 , the second clamp arm 320 - 2 and the connecting ring 320 - 3 are integrally formed, which helps to reduce the number of parts and makes assembly more convenient.

[0050] In some embodiments, the first clamp arm 320-1, the second clamp arm 320-2 and the connecting ring 320-3 may be connected by a curved structure. The curved structure has elasticity, for example, the curved structure may include materials such as metal and stainless steel.

[0051] In some embodiments, the curved structure is an arc, and the connecting ring 320-3 is tangent to the curved structure, so that the connection between the connecting ring 320-3 and the curved structure can reduce resistance and wear when entering and exiting the storage tube 310. In some embodiments, the connection between the first clamp arm 320-1, the second clamp arm 320-2 and the curved structure adopts a rounded corner smooth transition to reduce the concentrated stress at the connection between the first clamp arm 320-1, the second clamp arm 320-2 and the curved structure, and prevent the connection between the first clamp arm 320-1, the second clamp arm 320-2 and the curved structure from breaking. In other embodiments, the curved structure includes but is not limited to an arc, a broken line or other curved shapes.

[0052] In some embodiments of the present specification, the curved structure has a smooth transition in an arc shape, which can avoid stress concentration and prevent the curved structure from breaking due to external force.

[0053] In some embodiments, by setting the bending degree of the bending structure, the span between the first clamp arm 320 - 1 and the second clamp arm 320 - 2 can be set when the clamp 320 is in the open state.

[0054] In some embodiments, when the mandrel 230 moves from the distal end to the proximal end, the clip 320 is driven to move from the distal end to the proximal end in the receiving tube 310. Due to the limitation of the radial size of the receiving tube 310, the curved structure is squeezed and deformed, so that the clip 320 is converted from an open state to a closed state. In some embodiments, when the mandrel 230 moves from the proximal end to the distal end, the clip 320 is driven to move from the proximal end to the distal end in the receiving tube 310. The squeezing of the curved structure by the receiving tube 310 is reduced or disappears, and the deformation is gradually restored, so that the clip 320 is converted from a closed state to an open state.

[0055] The spring piece refers to a structural member used for being connected with the mandrel. In some embodiments, the spring piece has elasticity, for example, the spring piece may include materials such as metal and stainless steel.

[0056] In some embodiments, a locking groove or locking hole is provided on the connection ring 320-3, and the locking groove or locking hole constitutes the locked portion 320-5. In some embodiments, one or more locking grooves or locking holes may be provided on the connection ring 320-3.

[0057] In some embodiments of the present specification, a locking groove or a locking hole is provided on the connecting ring, and the locking groove or the locking hole can subsequently cooperate with the receiving tube to achieve locking of the clip.

[0058] The storage tube refers to a structural member used to store the clips.

[0059] In some embodiments, the storage tube 310 includes a connection locking portion 310 - 2 .

[0060] The connecting and locking portion refers to a structural member used to cooperate and connect the conveying device with the clamping device or to lock the clamping device.

[0061] In some embodiments, Figure 6 As shown, the connection locking portion 310-2 includes an elastic hook, the distal end of which is fixedly connected to the side wall of the receiving tube 310, and the elastic hook extends toward the proximal end of the receiving tube, and the proximal end of the elastic hook extends into the interior of the receiving tube 310. The proximal end of the elastic hook is a free end.

[0062] In some embodiments, the distal end of the elastic hook can be fixedly connected to the side wall of the storage tube 310 through the elastic cantilever 310-1. In some embodiments, the distal end of the elastic hook can also be fixedly connected to the side wall of the storage tube 310 in other ways. For example, the distal end of the elastic hook and the side wall of the storage tube 310 are fixedly connected by clamping, welding, etc.

[0063] In some embodiments, the connecting locking portion 310 - 2 may further include other elastic structures with inward protrusions, such as elastic bends.

[0064] In some embodiments, when the connection portion 210 cooperates with the connection locking portion 310-2, the conveying device 200 is connected to the clamping device 300; when the connection portion 210 is released from the connection locking portion 310-2, the connection between the conveying device 200 and the clamping device 300 is released. For more information about the above embodiments, please refer to Figure 8-10 and its related description.

[0065] In some embodiments, when the connecting locking portion 310-2 cooperates with the locked portion 320-5, the clamping device 300 is locked; when the connecting locking portion 310-2 and the locked portion 320-5 are released from cooperation, the clamping device 300 is unlocked. For more information about clamping device locking, please refer to Figure 18-20 For more information on unlocking the clamping device, see Figure 16-17 and its related description.

[0066] In some embodiments of the present specification, the elastic hook is not only cooperated with the connecting part to realize the connection between the conveying device and the clamping device, but also can cooperate with the locked part to realize the locking of the clamping device. The elastic hook can cooperate with multiple structures without the need to additionally set up connecting locking parts of different structures, which is beneficial to reducing the volume of the clamping device.

[0067] In some embodiments, Figure 5 and Figure 7 As shown, the distal end of the storage tube 310 includes a limiting piece 310 - 3 , and the limiting piece 310 - 3 and the spring piece 320 - 4 are bent to form a matching step 320 - 7 to limit the clip 320 .

[0068] The limiting piece refers to a structural member on the receiving tube for limiting the range of movement of the clip. In some embodiments, the limiting piece 310-3 may include a convex structure of various shapes, for example, semicircular, square, etc.

[0069] In some embodiments, the cooperation between the limiting piece 310 - 3 and the matching step 320 - 7 can limit the movement of the clip 320 from the proximal end to the distal end relative to the storage tube 310 .

[0070] In some embodiments of the present specification, by providing a limiting piece on the storage tube to cooperate with the matching step, the clip can be limited, which can effectively prevent the clip from falling off from the far end of the storage tube.

[0071] In some embodiments of the present specification, the conveying device and the clamping device can be connected or disconnected by cooperating or releasing the connection part with the connection locking part, so that the conveying device can be separated from the clamping device, and the conveying device can be reused, which is conducive to reducing the cost of surgery. For example, the conveying device and the first clamping device are connected and configured as a first clamp instrument. After the first clamp instrument completes the operation, the first clamping device and the conveying device are released from the cooperation; the conveying device and the second clamping device are connected and matched to form a second clamp instrument. After the second clamp instrument completes the operation, the second clamping device and the conveying device are released from the cooperation; ... and so on, the conveying device and multiple clamping devices are matched or released; at the same time, the connection locking part and the locked part are matched or released, so that the clamping device has a repeatable opening and closing function, which can bring convenience to clinical rapid hemostasis.

[0072] Figure 8 is an exemplary structural diagram before the connection part and the connection locking part are matched according to some embodiments of this specification; Fig. 9 is an exemplary cross-sectional view of the connecting portion and the connecting locking portion during the cooperation process according to some embodiments of this specification; Fig.10 It is an exemplary cross-sectional view of the connection part and the connection locking part after being matched according to some embodiments of this specification.

[0073] In some embodiments, Figure 8 As shown, the connecting portion 210 includes a limiting surface 210 - 1 and a connecting step 210 - 3 .

[0074] The limiting surface refers to a structural member on the connecting portion used to limit the moving range of the clamping device. In some embodiments, the limiting surface 210 - 1 is toward the distal end of the connecting portion 210 .

[0075] The connection step refers to a structural member that connects the clamping device to the conveying device after being matched with the elastic hook. In some embodiments, the connection step 210 - 3 is toward the proximal end of the connecting portion 210 .

[0076] In some embodiments, when the elastic hook cooperates with the connecting step 210 - 3 , the connecting portion 210 cooperates with the connecting locking portion 310 - 2 .

[0077] In some embodiments, Fig. 9 and Fig.10 As shown, the sheath tube 240 moves from the proximal end to the distal end, driving the connection part 210 to be inserted into the hole of the receiving tube 310 of the clamping device 300. The sheath tube 240 continues to move toward the distal end, and when the guiding inclined surface 210-4 of the connection part 210 contacts the elastic hook of the receiving tube 310, the guiding inclined surface 210-4 applies pressure in the radially outward direction to the elastic hook, so that the elastic cantilever 310-1 is deformed, and the elastic hook is stretched out in the radially outward direction until the receiving tube 310 contacts the limiting surface 210-1 of the connection part 210, at which time the elastic hook of the receiving tube 310 passes over the connecting step 210-3, and the elastic cantilever 310-1 will shrink in the radially inward direction, and the elastic hook of the receiving tube 310 contacts the connecting step 210-3 to limit the position, so that the connection part 210 cooperates with the connecting locking part 310-2, and the connection of the conveying device 200 and the clamping device 300 is completed.

[0078] Figure 2 is an exemplary structural diagram of a delivery device according to some embodiments of the present specification.

[0079] In some embodiments, Figure 2 As shown, the distal end of the mandrel 230 includes a connection tip 220 .

[0080] The connecting end refers to the structural part used to connect the core shaft and the clamp.

[0081] In some embodiments, Fig.11 As shown, the distal end of the connecting end 220 includes a connecting rod step surface 220 - 2 .

[0082] The connecting rod step surface refers to a structural member that connects the connecting end to the clip after being matched with the spring sheet. In some embodiments, the connecting rod step surface 220 - 2 faces the proximal end of the connecting end 220 .

[0083] In some embodiments, when the connecting rod step surface 220-2 cooperates with the spring sheet 320-4, the core shaft 230 is connected to the clip 320; when the connecting rod step surface 220-2 and the spring sheet 320-4 are released from cooperation, the connection between the core shaft 230 and the clip 320 is released.

[0084] In some embodiments, Figure 12-15As shown, the user pushes the sliding handle 120 from the proximal end to the distal end, and drives the connecting end 220 to move from the proximal end to the distal end through the core shaft 230. When the inclined surface 220-1 at the distal end of the connecting end 220 contacts the spring 320-4 of the clip 320, the inclined surface 220-1 will apply a radially outward thrust to the spring 320-4, causing the spring 320-4 to deform radially outward. The connecting end 220 continues to move toward the distal end, and when the connecting rod step surface 220-2 of the connecting end 220 passes over the spring end surface 320-6 of the spring 320-4 of the clip 320, the spring 320-4 will recover its deformation and shrink inward. At this time, the connecting rod step surface 220-2 of the connecting end 220 will contact the spring end surface 320-6 of the spring 320-4, so as to realize the connection between the connecting end 220 and the clip 320, and complete the connection between the mandrel 230 and the clip 320. For more information about the connection release between the mandrel and the clip, please refer to Figure 18-20 and its related description.

[0085] In some embodiments, the distal end of the connecting end 220 further includes a slope 220 - 1 , a rotation limiting structure 220 - 3 , a small diameter portion 220 - 4 and a large diameter portion 220 - 5 .

[0086] In some embodiments, the bevel 220 - 1 is disposed at the distal end of the connecting end 220 , and the diameter of the bevel 220 - 1 increases from the distal end to the proximal end.

[0087] The rotation limiting structure refers to a structural component on the connecting end used to transmit torque to the spring piece.

[0088] In some embodiments, the distal end of the large diameter portion 220-5 includes a cutting groove, which constitutes the rotation limiting structure 220-3. In some embodiments, the cutting groove can be obtained by cutting a groove at the distal end of the large diameter portion 220-5. The cutting groove can include a variety of shapes, for example, a square groove, a trapezoidal groove, a flat groove, etc.

[0089] In some embodiments, the rotation limiting structure 220-3 can also be set to other structures. For example, at least two limiting blocks are arranged at intervals around the connecting end 220, and at least two limiting blocks constitute the rotation limiting structure 220-3. In some embodiments, the limiting block can be arranged at the far end of the large diameter portion 220-5. The limiting block can include a variety of shapes, such as square, trapezoidal, etc.

[0090] In some embodiments, the distal end of the small diameter portion 220-4 is connected to the proximal end of the inclined surface 220-1, the diameter of the small diameter portion 220-4 is smaller than the diameter of the proximal end of the inclined surface 220-1, and the small diameter portion 220-4 and the proximal end of the inclined surface 220-1 constitute a connecting rod step surface 220-2.

[0091] In some embodiments, the distal end of the large diameter portion 220-5 is connected to the proximal end of the small diameter portion 220-4, and the diameter of the large diameter portion 220-5 is larger than the diameter of the small diameter portion 220-4. In some embodiments, the diameter of the proximal end of the inclined surface 220-1 can be the same as or different from the diameter of the large diameter portion 220-5.

[0092] In some embodiments, the rotation limiting structure 220 - 3 can transmit torque to the elastic sheet 320 - 4 .

[0093] In some embodiments, after the spring piece 320-4 of the clip 320 cooperates with the step surface 220-2 of the connecting rod, the spring piece 320-4 will exert radial inward pressure on the rotation limiting structure 220-3 due to inward contraction. At this time, when the connecting end 220 rotates, the rotation limiting structure 220-3 will transmit torque to the clip 320, driving the clip 320 to rotate.

[0094] In some embodiments of the present specification, the rotation limiting structure can transmit torque to the spring piece, and can drive the rotation of the connecting end by rotating the sliding handle, thereby realizing the rotation of the clamp, which is convenient for clamping the wound area of ​​the tissue in different directions.

[0095] In some embodiments, Figure 16-17 As shown, when the user pulls the sliding handle 120 from the distal end to the proximal end, the clamp 320 is driven to move from the distal end to the proximal end through the core shaft 230, so that the curved structure of the clamp 320 is stored in the storage tube 310, thereby achieving the closure of the clamp 320 and completing the clamping of the tissue by the clamp 320.

[0096] In some embodiments, when the proximal end of the connecting ring 320-3 of the clip 320 contacts the elastic hook, if the user continues to pull the sliding handle 120 to move proximally, the elastic hook will generate pressure on the proximal end of the connecting ring 320-3, so that the sliding handle 120 has a greater force feedback to the user. At this time, if the user moves the sliding handle 120 from the proximal end to the distal end again, the sliding handle 120 can drive the clip 320 from the proximal end to the distal end through the core shaft 230, so that the curved structure of the clip 320 gradually separates from the storage tube 310, reopens the clip 320, and realizes repeated opening and closing of the clip 320, so as to facilitate the tissue to be clamped again.

[0097] Fig.18 is an exemplary cross-sectional view of the connection portion and the connection locking portion being released from the engagement according to some embodiments of the present specification; Fig.19 is an exemplary structural diagram of region III according to some embodiments of this specification; Fig. 20 is an exemplary structural diagram of IV shown in some embodiments of this specification.

[0098] In some embodiments, after the core shaft 230 is connected to the clip 320, the core shaft 230 drives the clip 320 to move from the distal end to the proximal end. After the connecting ring 320-3 abuts against the elastic hook, the elastic hook expands outward to release the cooperation between the connecting part 210 and the connecting locking part 310-2.

[0099] In some embodiments, Figure 18-20 As shown, when the user continues to pull the sliding handle 120 from the distal end to the proximal end, the connecting end 220 will drive the clamp 320 to continue to move toward the proximal end. At this time, the proximal end of the connecting ring 320-3 of the clamp 320 will apply radially outward pressure to the elastic hook and the elastic cantilever 310-1, causing the elastic cantilever 310-1 to deform radially outward, so that the elastic hook remains in the expanded state. At this time, since the elastic hook is in the expanded state, the elastic hook is separated from the connecting step 210-3, so that the connection part 210 and the connecting locking part 310-2 are released, and the connection between the conveying device 200 and the clamping device 300 is released.

[0100] In some embodiments, the core shaft 230 continues to drive the clip 320 to move toward the proximal end, and the elastic hook cooperates with the locked portion 320 - 5 to lock the clip 320 .

[0101] In some embodiments, Figure 18-20 As shown, when the user continues to pull the sliding handle 120 toward the proximal end, the core shaft 230 will continue to drive the clip 320 to move toward the proximal end until the elastic hook is buckled into the locked portion 320-5 of the clip 320, so that the clip 320 is locked. At this time, the clip 320 and the storage tube 310 remain relatively fixed.

[0102] In some embodiments, the connecting portion includes a limiting step 210-2, the outer diameter of the limiting step 210-2 is larger than the inner diameter of the connecting ring 320-3; the core shaft 230 continues to drive the clamp 320 to move from the distal end to the proximal end, the connecting ring 320-3 abuts against the limiting step 210-2, and the core shaft 230 continues to move toward the proximal end to cause the spring piece 320-4 to deform or break, thereby separating the core shaft 230 from the clamp 320.

[0103] In some embodiments, Figure 18-20As shown, the user continues to pull the sliding handle 120 toward the proximal end, and continues to drive the clamp 320 to move toward the proximal end through the core shaft 230. Since the outer diameter of the limiting step 210-2 is larger than the inner diameter of the connecting ring 320-3, after the connecting ring 320-3 abuts against the limiting step 210-2, the core shaft 230 continues to move toward the proximal end to cause the spring piece 320-4 to deform or break, and the connecting rod step surface 220-2 of the connecting end 220 will be disengaged from the spring piece 320-4 of the clamp 320, realizing the separation of the core shaft 230 and the clamp 320, completing the complete separation of the conveying device 200 and the clamping device 300, and releasing the clamping device 300 and retaining it in the human body.

[0104] In some embodiments, after the delivery device 200 releases the clamping device 300 and remains in the human body, the delivery device 200 can be connected with the new clamping device 300 through the aforementioned Figure 8-15 The method described is used to connect and perform a clamping operation on the tissue, thereby achieving the reuse of the delivery device 200 and reducing the cost of surgery.

[0105] The beneficial effects that may be brought about by the embodiments of this specification include but are not limited to:

[0106] (1) The conveying device and the clamping device can be connected or disconnected by cooperating or releasing the connection part with the connection locking part, so that the conveying device can be separated from the clamping device, thereby realizing the reuse of the conveying device, which is beneficial to reducing the cost of surgery. At the same time, the connection locking part cooperates with or releases the locked part, so that the clamping device has a repeatable opening and closing function, which can bring convenience to clinical rapid hemostasis; (2) The elastic hook is not only cooperated with the connection part to realize the connection between the conveying device and the clamping device, but also cooperates with the locked part to realize the locking of the clamping device. The elastic hook can be matched with multiple structures without the need to set up additional connection locking parts with different structures, which is conducive to reducing the volume of the clamping device; (3) By providing a locking groove or a locking hole on the connecting ring, the locking groove or the locking hole can be matched with the elastic hook later to realize the locking of the clamp; (4) The first clamp arm, the second clamp arm and the connecting ring are integrally formed, which is conducive to reducing the number of parts and making assembly more convenient; (5) The rotation limit structure can transmit torque to the spring sheet, and the rotation of the connecting end can be driven by the rotation of the sliding handle to realize the rotation of the clamp, so as to facilitate the clamping of the wound part of the tissue in different directions; (6) By providing a limit piece on the storage tube to cooperate with the matching step, the clamp can be limited, which can effectively prevent the clamp from falling off from the far end of the storage tube.

[0107] It should be noted that different embodiments may produce different beneficial effects. In different embodiments, the beneficial effects that may be produced may be any one or a combination of the above, or any other beneficial effects that may be obtained.

[0108] The basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is only for example and does not constitute a limitation of this specification. Although not explicitly stated here, those skilled in the art may make various modifications, improvements and corrections to this specification. Such modifications, improvements and corrections are suggested in this specification, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of this specification.

[0109] At the same time, this specification uses specific words to describe the embodiments of this specification. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of this specification. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures or characteristics in one or more embodiments of this specification can be appropriately combined.

[0110] In addition, unless explicitly stated in the claims, the order of the processing elements and sequences described in this specification, the use of alphanumeric characters, or the use of other names are not intended to limit the order of the processes and methods of this specification. Although the above disclosure discusses some invention embodiments that are currently considered useful through various examples, it should be understood that such details are only for illustrative purposes, and the attached claims are not limited to the disclosed embodiments. On the contrary, the claims are intended to cover all modifications and equivalent combinations that are consistent with the essence and scope of the embodiments of this specification. For example, although the system components described above can be implemented by hardware devices, they can also be implemented only by software solutions, such as installing the described system on an existing server or mobile device.

[0111] Similarly, it should be noted that in order to simplify the description disclosed in this specification and thus help understand one or more embodiments of the invention, in the above description of the embodiments of this specification, multiple features are sometimes combined into one embodiment, figure or description thereof. However, this disclosure method does not mean that the features required by the subject matter of this specification are more than the features mentioned in the claims. In fact, the features of the embodiments are less than all the features of the single embodiment disclosed above.

[0112] In some embodiments, numbers describing the number of components and attributes are used. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise specified, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may change according to the required features of individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and parameters used to confirm the breadth of their range in some embodiments of this specification are approximate values, in specific embodiments, the setting of such numerical values ​​is as accurate as possible within the feasible range.

[0113] Each patent, patent application, patent application publication, and other materials, such as articles, books, specifications, publications, documents, etc., cited in this specification are hereby incorporated by reference in their entirety. Except for application history documents that are inconsistent with or conflicting with the contents of this specification, documents that limit the broadest scope of the claims of this specification (currently or later attached to this specification) are also excluded. It should be noted that if the descriptions, definitions, and / or use of terms in the materials attached to this specification are inconsistent or conflicting with the contents described in this specification, the descriptions, definitions, and / or use of terms in this specification shall prevail.

[0114] Finally, it should be understood that the embodiments described in this specification are only used to illustrate the principles of the embodiments of this specification. Other variations may also fall within the scope of this specification. Therefore, as an example and not a limitation, alternative configurations of the embodiments of this specification may be considered consistent with the teachings of this specification. Accordingly, the embodiments of this specification are not limited to the embodiments explicitly introduced and described in this specification.

Claims

1. A clamp device, characterized in that: The clamp apparatus comprises: A clamping device, the clamping device comprising a clamp and a receiving tube, the proximal end of the clamp being received in the receiving tube; A delivery device, the delivery device comprising a sheath tube provided with a channel and a mandrel movable in the channel of the sheath tube along the axial direction of the sheath tube, the mandrel being releasably connected to the clamp; Wherein, the receiving tube includes a connecting and locking portion, the clip includes a locked portion, and the distal end of the delivery device includes a connecting portion; When the connection portion cooperates with the connection locking portion, the conveying device is connected to the clamping device; when the connection portion cooperates with the connection locking portion, the connection between the conveying device and the clamping device is released; When the connection locking portion cooperates with the locked portion, the clamping device is locked; when the connection locking portion and the locked portion are released from cooperation, the clamping device is unlocked.

2. The clamp device according to claim 1, characterized in that: The connecting and locking portion comprises an elastic hook, the distal end of the elastic hook is fixedly connected to the side wall of the storage tube, and the proximal end of the elastic hook extends into the interior of the storage tube.

3. The clamp device according to claim 2, characterized in that: The connecting portion comprises a limiting surface and a connecting step. When the elastic hook cooperates with the connecting step, the connecting portion cooperates with the connecting locking portion.

4. The clip device according to claim 2, characterized in that: The clamp includes a first clamp arm, a second clamp arm and a connecting ring, the proximal ends of the first clamp arm and the second clamp arm are connected to the connecting ring, the distal end of the connecting ring is provided with a spring sheet, the proximal end of the spring sheet is connected to the connecting ring, the distal end of the spring sheet extends radially inwardly along the connecting ring, and the locked portion is provided on the connecting ring.

5. The clip device according to claim 4, characterized in that: The first clamping arm, the second clamping arm and the connecting ring are integrally formed.

6. The clip device according to claim 4, characterized in that: The connecting ring is provided with a locking groove or a locking hole, and the locking groove or the locking hole constitutes the locked portion.

7. The clip device according to claim 4, characterized in that: The distal end of the core shaft includes a connecting end, and the distal end of the connecting end includes a connecting rod step surface; when the connecting rod step surface cooperates with the spring sheet, the core shaft is connected to the clip; when the connecting rod step surface is released from the cooperation with the spring sheet, the connection between the core shaft and the clip is released.

8. The clip device according to claim 4, characterized in that: After the core shaft is connected to the clip, the core shaft drives the clip to move from the distal end to the proximal end. After the connecting ring abuts against the elastic hook, the elastic hook expands outward to release the cooperation between the connecting part and the connecting locking part.

9. The clip device according to claim 8, characterized in that: The core shaft continues to drive the clip to move toward the proximal end, and the elastic hook cooperates with the locked portion to lock the clip.

10. The clip device according to claim 9, characterized in that The connecting portion includes a limiting step, the outer diameter of which is larger than the inner diameter of the connecting ring; the core shaft continues to drive the clamp to move from the distal end to the proximal end, the connecting ring abuts against the limiting step, and the core shaft continues to move toward the proximal end and separates from the clamp.

11. The clip device according to claim 7, characterized in that: The connecting end includes an inclined surface and a rotation limiting structure, and the rotation limiting structure can transmit torque to the elastic sheet.

12. The clip device according to claim 4, characterized in that The distal end of the storage tube comprises a limiting piece, and a matching step formed by bending the limiting piece and the elastic piece limits the position of the clip.

13. The clip device according to claim 1, characterized in that The clamping device comprises a first clamping device and a second clamping device, the first clamping device comprises a first clamp and a first receiving tube, the proximal end of the first clamp is received in the first receiving tube; the second clamping device comprises a second clamp and a second receiving tube, the proximal end of the second clamp is received in the second receiving tube; The first clamping device and the conveying device are releasably connected, and the second clamping device and the conveying tube are releasably connected.

14. A clamp device, characterized in that: The clamp apparatus comprises: A clamping device, the clamping device comprising a clamp and a receiving tube, the proximal end of the clamp being received in the receiving tube; A delivery device, the delivery device comprising a sheath tube provided with a channel and a mandrel movable in the channel of the sheath tube along the axial direction of the sheath tube, the mandrel being releasably connected to the clamp; Wherein, the clip comprises a connecting ring, a spring sheet is arranged at the distal end of the connecting ring, a proximal end of the spring sheet is connected to the connecting ring, and a distal end of the spring sheet extends obliquely inwardly along the radial direction of the connecting ring; When the spring sheet is engaged with the mandrel, the clip is connected to the mandrel; when the spring sheet is released from engaging with the mandrel, the connection between the clip and the mandrel is released; When the spring sheet cooperates with the core shaft, the core shaft can transmit torque to the spring sheet.

15. The clip device according to claim 14, characterized in that The connecting ring and the spring sheet are integrally formed.

16. The clip device according to claim 14, characterized in that The connecting ring is provided with a locking groove or a locking hole; the storage tube comprises an elastic hook, the distal end of the elastic hook is fixedly connected to the side wall of the storage tube, and the proximal end of the elastic hook extends into the interior of the storage tube.

17. The clip device according to claim 14, characterized in that The distal end of the core shaft includes a connecting end, and the distal end of the connecting end includes a connecting rod step surface; when the connecting rod step surface cooperates with the spring sheet, the core shaft is connected to the clip; when the connecting rod step surface is released from the cooperation with the spring sheet, the connection between the core shaft and the clip is released.

18. The clip device according to claim 17, characterized in that The connecting end includes a bevel and a small diameter portion, the bevel is arranged at the distal end of the connecting end, the diameter of the bevel increases from the distal end to the proximal end, the distal end of the small diameter portion is connected to the proximal end of the bevel, the diameter of the small diameter portion is smaller than the diameter of the proximal end of the bevel, and the small diameter portion and the proximal end of the bevel constitute the step surface of the connecting rod.

19. The clip device according to claim 14, characterized in that After the core shaft is connected to the clip, the core shaft drives the clip to move from the distal end to the proximal end. After the connecting ring abuts against the elastic hook, the elastic hook expands outward, and the core shaft continues to drive the clip to move toward the proximal end. The elastic hook cooperates with the locking groove or locking hole, and the clip is locked.

20. The clip device according to claim 19, characterized in that The distal end of the sheath tube includes a limiting step, the outer diameter of which is larger than the inner diameter of the connecting ring; the core shaft continues to drive the clamp to move from the distal end to the proximal end, the connecting ring abuts against the limiting step, and the core shaft continues to move toward the proximal end to cause the spring sheet to deform or break, and the spring sheet and the core shaft are released from cooperation.

21. The clip device according to claim 17, characterized in that The connecting end further includes a rotation limiting structure, and the rotation limiting structure can transmit torque to the spring sheet after cooperating with the spring sheet.

22. The clip device according to claim 21, characterized in that The connecting end includes a bevel, a small diameter portion and a large diameter portion, the bevel is arranged at the distal end of the connecting end, the diameter of the bevel increases from the distal end to the proximal end, the distal end of the small diameter portion is connected to the proximal end of the bevel, the proximal end of the small diameter portion is connected to the distal end of the large diameter portion, and the distal end of the large diameter portion includes a cutting groove, which constitutes the rotation limiting structure.

23. The clip device according to claim 21, characterized in that At least two limit blocks are arranged at intervals on the circumference of the connecting end, and the at least two limit blocks constitute the rotation limit structure.

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