Forceps delivery device and forceps delivery system

Abstract

The application provides a forceps delivery device and a forceps delivery system, and relates to the technical field of medical instruments.The forceps delivery device comprises a main control handle connector assembly; the main control handle connector assembly comprises a main handle shell, first and second upper clamp arm traction wire handles, an outer sleeve, a middle sleeve and a connecting rod; the first and second upper clamp arm traction wire handles each comprise a respective traction wire main handle and a traction wire fixing part; wherein: the traction wire main handle is connected to the main handle shell through a switching mechanism, and the switching mechanism can control the traction wire main handle to switch between the two states of being fixed to the main handle shell and being capable of sliding forward and backward relative to the main handle shell. The forceps delivery system comprises the aforementioned forceps delivery device. The application at least alleviates the technical problem that the opening and closing action control process of two upper clamp arms in the existing forceps delivery device is complicated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a clip delivery device and a clip delivery system. BACKGROUND

[0002] Transcatheter mitral valve clip (MitraClip) as a minimally invasive catheter intervention for patients with severe mitral regurgitation and high risk of surgery is currently the preferred interventional surgery for the treatment of severe mitral regurgitation. Specifically, transcatheter mitral valve clip (MitraClip) is inspired by the surgical edge-to-edge mitral valve repair technique, using a similar technical principle, using a specially designed mitral valve clip (Clip), reaching the heart through the human blood vessels, and clamping the middle part of the two leaflets of the mitral valve under the guidance of three-dimensional ultrasound, so that the mitral valve changes from a large single hole to a small double hole in the systolic phase, thereby reducing mitral regurgitation. Simply put: transcatheter mitral valve repair technology sends instruments into the heart through the human blood vessels, with minimal damage to the heart, normal heart beat during operation, no need for extracorporeal cardiopulmonary support, and patients recover quickly, usually discharged in 2-3 days after surgery, and can participate in daily activities within 1 week after surgery.

[0003] In the prior art, the specific structure of the clip includes, for example, the clip in the patents “Mitral valve clip and mitral valve clip delivery device” (Patent Application Publication No. CN113940791A) and “Mitral valve clip and mitral valve clip delivery device” (Patent Application Publication No. CN113940792A), and the corresponding clip delivery device at least includes an operating handle, an outer tube and a connecting rod. The operating handle at least includes a handle shell, a first upper clamp arm traction wire handle and a second upper clamp arm traction wire handle. The specific use mode can be referred to the related description in the disclosure specification of the patents CN113940791A and CN113940792A. Among them, the “inner tube” in the patent CN113940792A is the middle sleeve in the present application and the patent CN113940791A. The “handle shell” in the patents CN113940791A and CN113940792A is the “main handle shell” in the present application. The present application is particularly designed for the clip delivery device and the delivery system in the patents CN113940791A and CN113940792A.

[0004] However, in actual use, the applicant found that the existing clip delivery device at least has the following problems:

[0005] In the process of controlling the opening and closing of the two upper clamping arms of the forceps by the traction wire, when the upper clamping arms need to be closed, the operator needs to pull the traction wire by hand and then fix the rear end of the traction wire. When the fixation of the rear end of the traction wire is cancelled, the corresponding upper clamping arm automatically returns to the open position. If the traction wire is not manually pulled and the rear end of the traction wire is not fixed on the traction wire handle of the corresponding upper clamping arm, the upper clamping arm cannot be re-closed. Therefore, if the selected release position of the upper clamping arm needs to be adjusted, it is very inconvenient to operate. In addition, if the two upper clamping arms need to be simultaneously controlled, the rear end of the two upper clamping arm traction wires needs to be unlocked from the upper clamping arm traction wire handle by hand. If the two upper clamping arm traction wires are respectively installed on the corresponding upper clamping arm traction wire handle, it is very difficult to operate. If the two upper clamping arm traction wires are directly fixed on the same position of the upper clamping arm traction wire handle, although the two upper clamping arm traction wires can be simultaneously controlled, it is still inconvenient to adjust the release position of the upper clamping arm when the selected release position is inaccurate. In addition, no matter which way is used, the operator cannot control the opening and closing of the two upper clamping arms and switch the control of the opening and closing of the two upper clamping arms by hand. SUMMARY

[0006] The purpose of the present application is to provide a forceps delivery device and a forceps delivery system to at least alleviate the technical problem of complicated control process of the opening and closing of the two upper clamping arms in the existing forceps delivery device.

[0007] To achieve the above purpose, the embodiments of the present application adopt the following technical solutions:

[0008] In the first aspect, the embodiments of the present application provide a forceps delivery device, which comprises a main control handle connector assembly.

[0009] Specifically, the main control handle pipe connection assembly comprises a main handle shell, a first upper clamping arm traction wire handle, a second upper clamping arm traction wire handle, an outer sleeve, a middle sleeve and a connecting rod. The distal ends of the first upper clamping arm traction wire handle and the second upper clamping arm traction wire handle are connected to the main handle shell, and the inner cavities thereof are communicated with the inner cavity of the main handle shell. The proximal end of the outer sleeve is fixedly connected to the main handle shell and communicated with the inner cavity of the main handle shell. The proximal end of the middle sleeve is fixedly connected to the inner part of the outer sleeve, and a pull wire channel is arranged between the middle sleeve and the outer sleeve to communicate the proximal end and the distal end of the outer sleeve. The distal end of the middle sleeve extends out of the outer sleeve, and an installation part is arranged at the distal end of the middle sleeve to be threadedly connected or clamped to the proximal end of the fixing seat of the forceps. The connecting rod sequentially passes through the middle sleeve, the outer sleeve and the main handle shell from the distal end to the proximal end, and the distal end of the connecting rod is provided with a threaded connection part for being threadedly connected to the proximal end of the driving rod of the forceps. In the main control handle pipe connection assembly, the first upper clamping arm traction wire handle and the second upper clamping arm traction wire handle each comprise a traction wire main handle and a traction wire fixing part. The inner part of the traction wire main handle is provided with a threading channel for threading the traction wire, and the traction wire fixing part is connected to the traction wire main handle to fix the traction wire threaded out of the threading channel.

[0010] In the forceps delivery device provided by the embodiment of the present application, more particularly, the traction wire main handle of the first upper clamping arm traction wire handle and the traction wire main handle of the second upper clamping arm traction wire handle are connected to the main handle shell through a switching mechanism, and the switching mechanism can control the traction wire main handle to switch between the state of being fixed to the main handle shell and the state of being capable of sliding forward and backward relative to the main handle shell.

[0011] Therefore, in the embodiment, when it is needed to open the upper clamping arms of the forceps, the switching mechanism is adjusted to control the traction wire main handle of the corresponding upper clamping arm traction wire handle to be in the state of being capable of sliding forward and backward relative to the main handle shell, and the traction wire main handle is slid forward relative to the main handle shell, so that the corresponding upper clamping arm can be opened. When it is needed to close the upper clamping arm, the traction wire main handle is slid backward relative to the main handle shell, and after the traction wire main handle is slid to the position, the switching mechanism is adjusted to control the traction wire main handle to be in the state of being fixed to the main handle shell, so that the corresponding upper clamping arm can be closed. The above-mentioned operation can control the states of the traction wire main handles of the two upper clamping arm traction wire handles relative to the main handle shell through the switching mechanism, so as to simultaneously control the two upper clamping arms of the forceps to be opened and closed.

[0012] Compared with the prior art, the pincer delivery device provided by the embodiment is more simple and convenient to operate when the two upper clamping arms of the pincer are opened and closed, and at least alleviates the technical problem of complicated control process of the opening and closing of the two upper clamping arms in the prior pincer delivery device.

[0013] In the pincer delivery device provided by the embodiment, more particularly, the traction wire main handle is connected to the main handle housing through a switching mechanism, and the switching mechanism can control the traction wire main handle to switch between the state of being fixed to the main handle housing and the state of being capable of sliding forward and backward relative to the main handle housing.

[0014] In the optional implementation of the embodiment, more preferably, the switching mechanism comprises a locking box, an external locking assembly and an internal locking assembly.

[0015] The direction of the extension of the distal end of the main handle housing towards the proximal end is the axial direction, and the proximal end side in the axial direction is the rear side, and the distal end side is the front side:

[0016] The external locking assembly is connected between the locking box and the main handle housing, and in the locked state of the external locking assembly, the locking box is locked to the main handle housing, and in the unlocked state of the external locking assembly, the locking box can slide forward and backward in the axial direction relative to the main handle housing. A first traction wire routing hole and a second traction wire routing hole are provided on the front wall of the locking box, which pass through the front wall of the locking box in the axial direction, and a first traction wire main handle opening and a second traction wire main handle opening are provided on the rear wall of the locking box, which pass through the rear wall of the locking box in the axial direction; the traction wire main handle of the first upper clamping arm is inserted into the locking box from the rear side of the locking box through the first traction wire main handle opening, and the traction wire main handle of the second upper clamping arm is inserted into the locking box from the rear side of the locking box through the second traction wire main handle opening. The internal locking assembly can respectively axially lock or unlock the traction wire main handle of the first upper clamping arm and the traction wire main handle of the second upper clamping arm in the locking box, and in the state that the traction wire main handle is unlocked in the locking box, the traction wire main handle can slide forward and backward in the axial direction relative to the locking box.

[0017] Further preferably, the direction perpendicular to the axial direction is the transverse direction:

[0018] The locking assembly in the box comprises two transversely extending and axially spaced apart transverse limiting ribs provided on the inner bottom wall of the locking box, and locking protrusions provided on the front ends of the traction wire body handles of the first and second upper clamping arm traction wire handles respectively. The top surface of each of the transverse limiting ribs is provided with a first limiting groove and a second limiting groove spaced apart from each other in the transverse direction, the first limiting groove is in communication with the first traction wire body handle aperture in the axial direction, and the second limiting groove is in communication with the second traction wire body handle aperture in the axial direction; the traction wire body handle of the first upper clamping arm traction wire handle is inserted into the first limiting groove on the two transverse limiting ribs in sequence from the rear side of the locking box through the first traction wire body handle aperture, and the traction wire body handle of the second upper clamping arm traction wire handle is inserted into the second limiting groove on the two transverse limiting ribs in sequence from the rear side of the locking box through the second traction wire body handle aperture; the traction wire body handle of the first upper clamping arm traction wire handle and the traction wire body handle of the second upper clamping arm traction wire handle can rotate relative to the locking box in the limiting groove respectively. When the traction wire body handle rotates relative to the locking box to the locking position, the locking protrusion is located in the interval groove formed by the two transverse limiting ribs axially spaced apart from each other, so that the corresponding traction wire body handle is axially locked in the locking box; when the traction wire body handle rotates relative to the locking box to the non-locking position, the locking protrusion is located outside the interval groove formed by the two transverse limiting ribs axially spaced apart from each other, and the corresponding traction wire body handle can slide axially relative to the locking box.

[0019] Further preferably, each of the transverse limiting ribs comprises a first side portion, a middle connecting portion and a second side portion connected in sequence in the transverse direction respectively, the middle connecting portion has a "U" shape in cross section cut along the transverse direction, the first limiting groove is provided on the top surface of the first side portion, and the second limiting groove is provided on the top surface of the second side portion.

[0020] Further preferably, the switching mechanism further comprises a first rotating connecting member and a second rotating connecting member; wherein: the first rotating connecting member is installed in a first limiting groove on the two transverse limiting ribs, the front end of the traction wire body handle of the first upper clamping arm traction wire handle is connected to the rear end of the first rotating connecting member, when the traction wire body handle of the first upper clamping arm traction wire handle is rotated relative to the locking box to the non-locking work position, the traction wire body handle of the first upper clamping arm traction wire handle can slide relative to the locking box with the first rotating connecting member. The second rotating connecting member is installed in a second limiting groove on the two transverse limiting ribs, the front end of the traction wire body handle of the second upper clamping arm traction wire handle is connected to the rear end of the second rotating connecting member, when the traction wire body handle of the second upper clamping arm traction wire handle is rotated relative to the locking box to the non-locking work position, the traction wire body handle of the second upper clamping arm traction wire handle can slide relative to the locking box with the second rotating connecting member.

[0021] Further preferably, the rear end of the first rotating connecting member is provided with a first clamping protrusion, and the rear end of the second rotating connecting member is provided with a second clamping protrusion. The front end of the traction wire body handle of the first upper clamping arm traction wire handle is provided with a first clamping groove, and the front end of the traction wire body handle of the second upper clamping arm traction wire handle is provided with a second clamping groove, the first clamping groove and the second clamping groove each include an axial groove and a transverse groove communicating with the axial groove. The front end of the traction wire body handle of the first upper clamping arm traction wire handle is sleeved on the rear end of the first rotating connecting member, and the first clamping protrusion is clamped in the transverse groove of the first clamping groove. The front end of the traction wire body handle of the second upper clamping arm traction wire handle is sleeved on the rear end of the second rotating connecting member, and the second clamping protrusion is clamped in the transverse groove of the second clamping groove.

[0022] Further preferably, the first rotating connecting member and the second rotating connecting member each include a tubular body extending in the axial direction, the first clamping protrusion and the second clamping protrusion each include two, the two first clamping protrusions are symmetrically arranged on the outer peripheral surface of the tubular body of the first rotating connecting member, and the two second clamping protrusions are symmetrically arranged on the outer peripheral surface of the tubular body of the second rotating connecting member; the first clamping groove and the second clamping groove each include two, the two first clamping grooves correspond to the two first clamping protrusions one by one, and the two second clamping grooves correspond to the two second clamping protrusions one by one.

[0023] More preferably, a compression washer is further arranged between the outer circumferential surface of the first rotary connecting member and the inner circumferential surface of the front end of the traction wire body handle of the first upper clamping arm traction wire handle, and between the outer circumferential surface of the second rotary connecting member and the inner circumferential surface of the front end of the traction wire body handle of the second upper clamping arm traction wire handle.

[0024] More preferably, the locking box assembly comprises a locking screw. One side of the main handle shell is provided with a locking box mounting cavity, the front end of the locking box is arranged inside the locking box mounting cavity, and the rear end of the locking box is arranged outside the locking box mounting cavity. A threaded hole penetrating the shell wall of the main handle shell is arranged on the shell wall corresponding to the locking box mounting cavity; a locking groove and an unlocking groove are arranged on the outer surface of the locking box corresponding to the threaded hole, and the locking groove and the unlocking groove are arranged along the axial direction of the locking box. The threaded rod of the locking screw penetrates and is threadedly connected to the threaded hole, and the end of the threaded rod of the locking screw abuts against the locking groove or the unlocking groove to lock or unlock the locking box to the main handle shell.

[0025] In a second aspect, the embodiments of the present application provide a clip applier delivery system, comprising the clip applier delivery device according to any one of the preceding embodiments.

[0026] Since the clip applier delivery system provided by the embodiments of the present application comprises the clip applier delivery device provided by the first aspect, the clip applier delivery system provided by the embodiments of the present application can achieve all the beneficial effects that the clip applier delivery device provided by the first aspect can achieve. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0028] Figure 1 The overall structure schematic diagram of the clip applier delivery device provided by the embodiments of the present application is shown in FIG. 1.

[0029] Figure 2 The partial structure half-sectional view of the clip applier delivery device shown in FIG. 2 is shown in FIG. 3. Figure 1 The partial structure half-sectional view of the clip applier delivery device shown in FIG. 2 is shown in FIG. 3.

[0030] Figure 3 The partial structure half-sectional view of the clip applier delivery device shown in FIG. 2 is shown in FIG. 3. Figure 2 The partial structure half-sectional view of the clip applier delivery device shown in FIG. 2 is shown in FIG. 3.

[0031] Figure 4 The partial structure half-sectional view of the clip applier delivery device shown in FIG. 2 is shown in FIG. 3. Figure 3Enlarged view of the local structure of the site III;

[0032] Figure 5 To Figure 3 Enlarged view of the local structure of the site IV;

[0033] Figure 6 To Figure 3 Enlarged view of the local structure of the site V;

[0034] Figure 7 To Figure 2 Enlarged view of the local structure of the site II.

[0035] Icon: 100-clip; 110-first upper clamping arm; 120-second upper clamping arm; 130-driving rod; 200-pulling wire; 11-main handle shell; 121-first upper clamping arm pulling wire handle; 122-second upper clamping arm pulling wire handle; 1201-pulling wire main handle; 12011-first clamping groove; 12012-second clamping groove; 1202-pulling wire fixing part; 13-outer sleeve; 14-middle sleeve; 15-connecting rod; 2-switching mechanism; 21-locking box; 211-transverse limiting rib; 21101-first limiting groove; 21102-second limiting groove; 2110-separation groove; 2111-first side; 2112-middle connecting part; 2113-second side; 212-locking protrusion; 22-first rotary connecting part; 221-first clamping protrusion; 23-second rotary connecting part; 231-second clamping protrusion; 24-compression washer. DETAILED DESCRIPTION

[0036] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0038] It should be noted that: similar labels and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0039] In the description of the present application, it should be noted that the terms "proximal end", "distal end", "front end", "rear end", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed during use, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0040] In particular, in the present application, the end of the medical instrument close to the operator during surgery is the proximal end of the medical instrument, and the end of the medical instrument entering the blood vessel of the patient is the distal end of the medical instrument (the front end of the medical instrument is the distal end, and the rear end of the medical instrument is the proximal end).

[0041] In addition, the terms "horizontal", "vertical" and the like do not mean that the parts must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0042] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "arrangement", "installation", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between the two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The following examples and features in the examples can be combined with each other without conflict.

[0044] Example 1

[0045] The present embodiment provides a forceps delivery device, which refers to Figures 1 to 7 The forceps delivery device comprises a main control handle connector assembly.

[0046] Specifically, the main control handle pipe connection assembly comprises a main handle shell 11, a first upper clamping arm traction wire handle 121, a second upper clamping arm traction wire handle 122, an outer sleeve 13, a middle sleeve 14, and a connecting rod 15. The distal end of the first upper clamping arm traction wire handle 121 and the distal end of the second upper clamping arm traction wire handle 122 are connected to the main handle shell 11 and the inner cavities thereof communicate with the inner cavity of the main handle shell 11. The proximal end of the outer sleeve 13 is fixedly connected to the main handle shell 11 and communicates with the inner cavity of the main handle shell 11. The proximal end of the middle sleeve 14 is fixedly connected to the inside of the outer sleeve 13, and a pull wire passage that communicates the proximal end and the distal end of the outer sleeve 13 is arranged between the middle sleeve 14 and the outer sleeve 13. The distal end of the middle sleeve 14 extends out of the outer sleeve 13, and an installation part for being screw-connected or clamped to the proximal end of the fixing seat of the clamp device 100 is arranged at the distal end of the middle sleeve 14. The connecting rod 15 passes through the middle sleeve 14, the outer sleeve 13, and the main handle shell 11 from the distal end to the proximal end in sequence, and a screw-connection part for being screw-connected to the proximal end of the driving rod 130 of the clamp device 100 is arranged on the distal end wall of the connecting rod 15. In the main control handle pipe connection assembly, the first upper clamping arm traction wire handle 121 and the second upper clamping arm traction wire handle 122 each comprise a traction wire main body handle 1201 and a traction wire fixing part 1202. The inner part of the traction wire main body handle 1201 is provided with a threading passage for threading the traction wire 200, and the traction wire fixing part 1202 is connected to the traction wire main body handle 1201 and is used for fixing the traction wire 200 threaded out of the threading passage. The traction wire fixing part 1202 can adopt a screw cap or a winding structure.

[0047] In operation, the forceps 100 is loaded on the distal end of the forceps delivery device, specifically, the distal end of the middle sleeve 14 is screwed or clamped to the mounting portion at the proximal end of the fixed seat of the forceps 100; the threaded connection portion at the distal end of the connecting rod 15 is screwed to the proximal end of the driving rod 130 of the forceps 100; the first traction wire is threaded through the threading hole of one of the upper clamping arms (the first upper clamping arm 110 shown in the figure), and the two ends of the first traction wire are pulled through the pull wire channel between the middle sleeve 14 and the outer sleeve 13, the main handle shell 11, and then the traction wire main handle 1201 of the first upper clamping arm traction wire handle 121, and are fixedly pulled to the traction wire fixed portion 1202 of the first upper clamping arm traction wire handle 121; the second traction wire is threaded through the threading hole of the other upper clamping arm (the second upper clamping arm 120 shown in the figure), and the two ends of the second traction wire are pulled through the pull wire channel between the middle sleeve 14 and the outer sleeve 13, the main handle shell 11, and then the traction wire main handle 1201 of the second upper clamping arm traction wire handle 122, and are fixedly pulled to the traction wire fixed portion 1202 of the second upper clamping arm traction wire handle 122. During surgery, by pulling or releasing the first traction wire and the second traction wire, the opening and closing of the two upper clamping arms of the forceps 100 can be controlled; by pushing and pulling the connecting rod 15 relative to the middle sleeve 14, the driving rod 130 of the forceps 100 can be driven to move forward and backward, thereby driving the two lower clamping arms of the forceps 100 to open and close.Specifically, the first traction wire and the second traction wire are pulled in the proximal direction to make the two upper clamping arms in the closed state, the connecting rod 15 is pushed in the distal direction relative to the middle sleeve 14 to make the two lower clamping arms closed, so that the forceps carrier 100 is in the fully closed state; then, the forceps carrier is sent into the heart in a puncture manner by using the forceps carrier delivery device, under the guidance of three-dimensional ultrasound, the two lower clamping arms of the forceps carrier pass through the middle parts of the two leaves of the mitral valve, the connecting rod 15 is withdrawn in the proximal direction relative to the middle sleeve 14, so that the two lower clamping arms of the forceps carrier 100 are opened, then the forceps carrier delivery device is withdrawn in the proximal direction as a whole, so that one lower clamping arm drags one leaf of the mitral valve, and the other lower clamping arm drags the other leaf of the mitral valve; then, the first traction wire and the second traction wire are released, so that one leaf of the mitral valve is clamped between one lower clamping arm and one upper clamping arm of the forceps carrier, and the other leaf of the mitral valve is clamped between the other lower clamping arm and the other upper clamping arm of the forceps carrier; then, the forceps carrier delivery device is withdrawn in the proximal direction as a whole, and the connecting rod 15 is pushed in the distal direction relative to the middle sleeve 14, so that the two lower clamping arms of the forceps carrier 100 are fully closed with the two upper clamping arms, and finally the middle parts of the two leaves of the mitral valve are clamped, so that the mitral valve changes from a large single hole in the systolic phase to a small double hole, thereby reducing the mitral valve regurgitation; finally, the connecting rod 15 is reversely rotated relative to the middle sleeve 14 to be separated from the driving rod 130 of the forceps carrier 100 in the proximal direction, and then the outer sleeve 13, the middle sleeve 14 and the connecting rod 15 of the forceps carrier delivery device and the traction wires 200 are withdrawn out of the patient's body, and the forceps carrier 100 remains in the patient's body.

[0048] In the forceps carrier delivery device provided by the embodiment of the present application, more particularly, the traction wire main body handle 1201 of the first upper clamping arm traction wire handle 121 and the traction wire main body handle 1201 of the second upper clamping arm traction wire handle 122 are connected to the main handle shell 11 through the switching mechanism 2, and the switching mechanism 2 can control the switching of each traction wire main body handle 1201 between the state of being fixed to the main handle shell 11 and the state of being capable of sliding forward and backward relative to the main handle shell 11.

[0049] Therefore, in the embodiment, when the upper clamping arms of the forceps 100 need to be opened, the switching mechanism 2 is adjusted to enable the traction wire body handle 1201 corresponding to the upper clamping arm traction wire handle to slide forward and backward relative to the main handle shell 11, and the upper clamping arm corresponding to the traction wire body handle 1201 is opened by sliding the traction wire body handle 1201 forward relative to the main handle shell 11; when the upper clamping arm needs to be closed, the traction wire body handle 1201 is slid backward relative to the main handle shell 11, and the corresponding upper clamping arm is closed by adjusting the switching mechanism 2 to enable the traction wire body handle 1201 to be fixed to the main handle shell 11. The above-mentioned actions can control the state of the traction wire body handle 1201 of the two upper clamping arm traction wire handles relative to the main handle shell 11 by the switching mechanism 2, so as to simultaneously control the opening and closing of the two upper clamping arms of the forceps 100.

[0050] Compared with the prior art, the forceps delivery device provided in the embodiment is more simple and convenient to operate when the two upper clamping arms of the forceps 100 are opened and closed, and at least the technical problem of complicated control process of the opening and closing of the two upper clamping arms in the prior art is solved.

[0051] In an optional embodiment of the present application, preferably, as shown in Figures 1 to 6 The switching mechanism 2 includes a locking box 21, an external locking assembly and an internal locking assembly.

[0052] The direction of the distal end of the main handle shell 11 extending towards the proximal end is the axial direction, and the proximal end side in the axial direction is the rear side, and the distal end side is the front side:

[0053] The box-external locking assembly is connected between the locking box 21 and the main handle shell 11. In the locked state of the box-external locking assembly, the locking box 21 is locked to the main handle shell 11. In the unlocked state of the box-external locking assembly, the locking box 21 can slide axially forward and backward relative to the main handle shell 11. The front wall of the locking box 21 is provided with a first traction wire running hole and a second traction wire running hole which pass through the front wall of the locking box 21 in the axial direction. The rear wall of the locking box 21 is provided with a first traction wire handle opening and a second traction wire handle opening which pass through the rear wall of the locking box 21 in the axial direction. The traction wire handle 1201 of the first upper clamping arm traction wire handle 121 is inserted into the locking box 21 from the rear side of the locking box 21 through the first traction wire handle opening. The traction wire handle 1201 of the second upper clamping arm traction wire handle 122 is inserted into the locking box 21 from the rear side of the locking box 21 through the second traction wire handle opening. The box-internal locking assembly can axially lock or unlock the traction wire handle 1201 of the first upper clamping arm traction wire handle 121 and the traction wire handle 1201 of the second upper clamping arm traction wire handle 122 in the locking box 21, respectively. In the state that the corresponding traction wire handle 1201 is unlocked in the locking box 21, the traction wire handle 1201 can slide axially forward and backward relative to the locking box 21.

[0054] Therefore, in the embodiment, at least the following ways of controlling the opening and closing of the two upper clamping arms of the clamp device 100 by the switching mechanism 2 are provided:

[0055] (1) Simultaneously control the opening and closing of the two upper clamping arms of the clamp device 100: use the box-internal locking assembly to axially lock the traction wire handle 1201 of the first upper clamping arm traction wire handle 121 and the traction wire handle 1201 of the second upper clamping arm traction wire handle 122 in the locking box 21, respectively, then adjust the box-external locking assembly to the unlocked state, pull the locking box 21 to slide axially forward and backward relative to the main handle shell 11, so as to simultaneously open or close the two upper clamping arms (slide axially forward relative to the main handle shell 11 to open, slide axially backward relative to the main handle shell 11 to close), and then adjust the box-external locking assembly to the locked state after sliding to the position;

[0056] (2) Control the opening and closing of any one upper clamp arm of the clamp device 100: adjust the outer locking assembly of the box to the locked state, use the inner locking assembly of the box to axially unlock the traction wire main body handle 1201 of the first upper clamp arm traction wire handle 121 and the traction wire main body handle 1201 of the second upper clamp arm traction wire handle 122 from the locking box 21, which needs to adjust the opening and closing of the corresponding upper clamp arm traction wire handle of the upper clamp arm; the traction wire main body handle 1201 of the other upper clamp arm traction wire handle remains axially locked to the locking box 21; then slide the traction wire main body handle 1201 of the corresponding upper clamp arm traction wire handle that needs to be adjusted in the axial direction relative to the locking box 21, that is, control the opening and closing of the corresponding upper clamp arm separately from the other upper clamp arm, and thus adjust the opening and closing of any one upper clamp arm.

[0057] Continuing to refer to Figures 1 to 6 In this embodiment, it is further preferred that the direction perpendicular to the axial direction is the transverse direction:

[0058] The above-mentioned inner locking assembly of the box can include two transverse limiting ribs 211 extending in the transverse direction and spaced apart from each other in the axial direction on the inner bottom wall of the locking box 21, and locking protrusions 212 respectively arranged at the front ends of the traction wire main body handles 1201 of the first upper clamp arm traction wire handle 121 and the second upper clamp arm traction wire handle 122. The top surface of each transverse limiting rib 211 is respectively provided with a first limiting groove 21101 and a second limiting groove 21102 spaced apart from each other in the transverse direction, the first limiting groove 21101 is in communication with the first traction wire main body handle opening in the axial direction, and the second limiting groove 21102 is in communication with the second traction wire main body handle opening in the axial direction; the traction wire main body handle 1201 of the first upper clamp arm traction wire handle 121 is inserted into the first limiting groove 21101 on the two transverse limiting ribs 211 in sequence from the rear side of the locking box 21 through the first traction wire main body handle opening, and the traction wire main body handle 1201 of the second upper clamp arm traction wire handle 122 is inserted into the second limiting groove 21102 on the two transverse limiting ribs 211 in sequence from the rear side of the locking box 21 through the second traction wire main body handle opening; the traction wire main body handle 1201 of the first upper clamp arm traction wire handle 121 and the traction wire main body handle 1201 of the second upper clamp arm traction wire handle 122 can be respectively rotated relative to the locking box 21 in the limiting groove where they are located. When each traction wire main body handle 1201 is rotated relative to the locking box 21 to the locking position, the locking protrusion 212 is located in the interval groove 2110 formed by the two transverse limiting ribs 211 spaced apart from each other in the axial direction, and the corresponding traction wire main body handle 1201 is axially locked to the locking box 21; when the traction wire main body handle 1201 is rotated relative to the locking box 21 to the non-locking position, the locking protrusion 212 is located outside the interval groove 2110 formed by the two transverse limiting ribs 211 spaced apart from each other in the axial direction, and the corresponding traction wire main body handle 1201 can slide forward and backward relative to the locking box 21 in the axial direction.

[0059] Further preferably, each of the lateral limiting ribs 211 comprises a first side portion 2111, a middle connecting portion 2112 and a second side portion 2113 connected in sequence in the respective lateral direction, the middle connecting portion 2112 has a "U" shaped cross section when cut along the lateral direction, the first limiting groove 21101 is arranged on the top surface of the first side portion 2111, and the second limiting groove 21102 is arranged on the top surface of the second side portion 2113. Through the above structure, the top surface of the middle connecting portion 2112 and the top surface of the first side portion 2111 and the top surface of the second side portion 2113 form a gap in the vertical direction, so as to provide a certain rotating space for the locking protrusion 212 when the traction wire body handle 1201 rotates to the non-locking position, and avoid being stuck.

[0060] Continuing to refer to Figures 1 to 6 Further preferably, the switching mechanism 2 can further comprise a first rotating connecting piece 22 and a second rotating connecting piece 23; the first rotating connecting piece 22 is installed in the first limiting groove 21101 on the two lateral limiting ribs 211, and the front end of the traction wire body handle 1201 of the first upper clamping arm traction wire handle 121 is connected to the rear end of the first rotating connecting piece 22, when the traction wire body handle 1201 of the first upper clamping arm traction wire handle 121 rotates relative to the locking box 21 to the non-locking position, the traction wire handle of the first upper clamping arm traction wire handle 121 can slide relative to the locking box 21 with the first rotating connecting piece 22. The second rotating connecting piece 23 is installed in the second limiting groove 21102 on the two lateral limiting ribs 211, and the front end of the traction wire body handle 1201 of the second upper clamping arm traction wire handle 122 is connected to the rear end of the second rotating connecting piece 23, when the traction wire body handle 1201 of the second upper clamping arm traction wire handle 122 rotates relative to the locking box 21 to the non-locking position, the traction wire handle of the second upper clamping arm traction wire handle 122 can slide relative to the locking box 21 with the second rotating connecting piece 23. Through the arrangement of the first rotating connecting piece 22 and the second rotating connecting piece 23, on the one hand, it is convenient for assembly and manufacturing, and on the other hand, it can improve the rotating fluency of the corresponding traction wire body handle 1201.

[0061] Further preferably, as Figures 1 to 6As shown, the outer circumferential surface of the rear end of the first rotating connecting piece 22 is provided with a first clamping protrusion 221, and the outer circumferential surface of the rear end of the second rotating connecting piece 23 is provided with a second clamping protrusion 231. The front end circumferential wall of the traction wire main handle 1201 of the first upper clamping arm traction wire handle 121 is provided with a first clamping groove 12011, and the front end circumferential wall of the traction wire main handle 1201 of the second upper clamping arm traction wire handle 122 is provided with a second clamping groove 12012. The first clamping groove 12011 and the second clamping groove 12012 respectively include an axial groove and a transverse groove communicating with the axial groove. The front end of the traction wire main handle 1201 of the first upper clamping arm traction wire handle 121 is sleeved on the rear end of the first rotating connecting piece 22, and the first clamping protrusion 221 is clamped in the transverse groove of the first clamping groove 12011. The front end of the traction wire main handle 1201 of the second upper clamping arm traction wire handle 122 is sleeved on the rear end of the second rotating connecting piece 23, and the second clamping protrusion 231 is clamped in the transverse groove of the second clamping groove 12012. The axial groove is used for assembly.

[0062] Further preferably, the first rotating connecting piece 22 and the second rotating connecting piece 23 respectively include a tubular body extending in the axial direction, the first clamping protrusion 221 and the second clamping protrusion 231 respectively include two, the two first clamping protrusions 221 are symmetrically arranged on the outer circumferential surface of the tubular body of the first rotating connecting piece 22, and the two second clamping protrusions 231 are symmetrically arranged on the outer circumferential surface of the tubular body of the second rotating connecting piece 23; the first clamping groove 12011 and the second clamping groove 12012 are respectively provided with two, the two first clamping grooves 12011 correspond to the two first clamping protrusions 221 one by one, and the two second clamping grooves 12012 correspond to the two second clamping protrusions 231 one by one.

[0063] More preferably, a compression washer 24 is further arranged between the outer circumferential surface of the first rotating connecting piece 22 and the inner circumferential surface of the front end of the traction wire main handle 1201 of the first upper clamping arm traction wire handle 121, and between the outer circumferential surface of the second rotating connecting piece 23 and the inner circumferential surface of the front end of the traction wire main handle 1201 of the second upper clamping arm traction wire handle 122, so as to further improve the assembly reliability.

[0064] In addition, in the embodiment of the present application, the box outer locking assembly preferably comprises a locking screw. One side of the main handle shell 11 is provided with a locking box mounting cavity, the front end of the locking box 21 is arranged inside the locking box mounting cavity, and the rear end of the locking box 21 is arranged outside the locking box mounting cavity. A threaded hole penetrating the shell wall of the main handle shell 11 is arranged on the shell wall corresponding to the locking box mounting cavity of the main handle shell 11; a locking groove and an unlocking groove are arranged on the outer surface of the locking box 21 corresponding to the threaded hole and spaced apart along the axial direction of the locking box 21. The threaded hole of the locking screw is screwed into the threaded hole, and the end of the threaded rod of the locking screw abuts against the locking groove or the unlocking groove to lock or unlock the locking box 21 to the main handle shell 11.

[0065] Embodiment two

[0066] The embodiment provides a forceps 100 delivery system, which comprises the forceps delivery device provided in any optional embodiment of embodiment one.

[0067] Since the forceps 100 delivery system provided by the embodiment comprises the forceps delivery device described in embodiment one, the forceps 100 delivery system provided by the embodiment can achieve all the beneficial effects of the forceps delivery device in embodiment one, and the specific structure and the effects that can be achieved can be obtained by referring to the optional or preferred embodiments in embodiment one.

[0068] Finally, it should be noted that: each embodiment in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same and similar parts of each embodiment can be referred to. The above embodiments in the specification are only used to illustrate the technical solutions of the present application, and not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some or all of the technical features. The modification or replacement does not make the essence of the corresponding technical solution deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A forceps delivery device, comprising a main control handle adapter assembly; the main control handle adapter assembly comprises a main handle housing (11), a first upper clamp arm traction wire handle (121), a second upper clamp arm traction wire handle (122), an outer sleeve (13), a middle sleeve (14) and a connecting rod (15); the distal end of the first upper clamp arm traction wire handle (121) and the distal end of the second upper clamp arm traction wire handle (122) are connected to the main handle housing (11) and the inner cavities thereof communicate with the inner cavity of the main handle housing (11); the proximal end of the outer sleeve (13) is fixedly connected to the main handle housing (11) and communicates with the inner cavity of the main handle housing (11); the proximal end of the middle sleeve (14) is fixedly connected to the inside of the outer sleeve (13) and a pull wire passage is arranged between the middle sleeve (14) and the outer sleeve (13) to communicate the proximal end and the distal end of the outer sleeve (13); the distal end of the middle sleeve (14) extends out of the outer sleeve (13) and an installation part is arranged at the distal end of the middle sleeve (14) to be threadedly connected or clamped to the proximal end of the fixing seat of the forceps (100); the connecting rod (15) sequentially passes through the middle sleeve (14), the outer sleeve (13) and the main handle housing (11) from the distal end to the proximal end, and a threaded connection part is arranged on the distal end wall of the connecting rod (15) to be threadedly connected to the proximal end of the driving rod (130) of the forceps (100); in the main control handle adapter assembly, the first upper clamp arm traction wire handle (121) and the second upper clamp arm traction wire handle (122) respectively comprise a traction wire main handle (1201) and a traction wire fixing part (1202); the inside of the traction wire main handle (1201) is provided with a threading passage for threading the traction wire; the traction wire fixing part (1202) is connected to the traction wire main handle (1201) to fix the traction wire threaded out of the threading passage; characterized in that: the traction wire main handle (1201) is connected to the main handle housing (11) through a switching mechanism (2); the switching mechanism (2) can control the traction wire main handle (1201) to switch between the two states of being fixed to the main handle housing (11) and being capable of sliding back and forth relative to the main handle housing (11); the switching mechanism (2) comprises a locking box (21), an external locking assembly and an internal locking assembly; the direction of the main handle housing (11) extending from the distal end to the proximal end is the axial direction, and the proximal end side is the rear side and the distal end side is the front side in the axial direction: the external locking assembly is connected between the locking box (21) and the main handle housing (11); in the locked state of the external locking assembly, the locking box (21) is locked to the main handle housing (11); in the unlocked state of the external locking assembly, the locking box (21) can slide back and forth in the axial direction relative to the main handle housing (11). The first traction wire through hole and the second traction wire through hole are arranged on the front wall of the locking box (21) and axially penetrate the front wall of the locking box (21), and the first traction wire body handle opening and the second traction wire body handle opening are arranged on the rear wall of the locking box (21) and axially penetrate the rear wall of the locking box (21); the traction wire body handle (1201) of the first upper clamping arm traction wire handle (121) is inserted into the locking box (21) from the rear side of the locking box (21) through the first traction wire body handle opening, and the traction wire body handle (1201) of the second upper clamping arm traction wire handle (122) is inserted into the locking box (21) from the rear side of the locking box (21) through the second traction wire body handle opening; The in-box locking assembly can axially lock or unlock the traction wire body handle (1201) of the first upper clamping arm traction wire handle (121) and the traction wire body handle (1201) of the second upper clamping arm traction wire handle (122) in the locking box (21), and in the state that the traction wire body handle (1201) is unlocked in the locking box (21), the traction wire body handle (1201) can slide forward and backward in the axial direction relative to the locking box (21); In the direction perpendicular to the axial direction, the in-box locking assembly comprises two transverse limiting ribs (211) arranged on the inner bottom wall of the locking box (21) and extending in the transverse direction and spaced apart from each other in the axial direction, and locking protrusions (212) arranged at the front ends of the traction wire body handles (1201) of the first upper clamping arm traction wire handle (121) and the second upper clamping arm traction wire handle (122) respectively; when the traction wire body handle (1201) is rotated relative to the locking box (21) to a locking position, the locking protrusion (212) is located in the interval groove (2110) formed by the two transverse limiting ribs (211) and spaced apart from each other in the axial direction, so that the corresponding traction wire body handle (1201) is axially locked in the locking box (21); when the traction wire body handle (1201) is rotated relative to the locking box (21) to a non-locking position, the locking protrusion (212) is located outside the interval groove (2110) formed by the two transverse limiting ribs (211) and spaced apart from each other in the axial direction, and the corresponding traction wire body handle (1201) can slide forward and backward in the axial direction relative to the locking box (21); The out-of-box locking assembly comprises a locking screw.

2. The clip applier instrument of claim 1, wherein: The top surface of each of the transverse limiting ribs (211) is respectively provided with first limiting grooves (21101) and second limiting grooves (21102) which are spaced apart from each other in the transverse direction, the first limiting grooves (21101) are in communication with the first traction wire body handle openings in the axial direction, and the second limiting grooves (21102) are in communication with the second traction wire body handle openings in the axial direction; the traction wire body handle (1201) of the first upper clamping arm traction wire handle (121) is inserted into the first limiting grooves (21101) on the two transverse limiting ribs (211) from the rear side of the locking box (21) through the first traction wire body handle openings in sequence, the traction wire body handle (1201) of the second upper clamping arm traction wire handle (122) is inserted into the second limiting grooves (21102) on the two transverse limiting ribs (211) from the rear side of the locking box (21) through the second traction wire body handle openings in sequence, and the traction wire body handle (1201) of the first upper clamping arm traction wire handle (121) and the traction wire body handle (1201) of the second upper clamping arm traction wire handle (122) can rotate relative to the locking box (21) in the limiting grooves respectively.

3. The clip applier instrument of claim 2, wherein: Each of the transverse limiting ribs (211) respectively comprises a first side portion (2111), a middle connecting portion (2112) and a second side portion (2113) which are connected in sequence in the transverse direction, the middle connecting portion (2112) has a "U" shape in the cross section cut in the transverse direction, the first limiting grooves (21101) are arranged on the top surface of the first side portion (2111), and the second limiting grooves (21102) are arranged on the top surface of the second side portion (2113).

4. The clip applier instrument of claim 3, wherein: The switching mechanism (2) further comprises a first rotating connecting member (22) and a second rotating connecting member (23); The first rotating connecting member (22) is installed in the first limiting grooves (21101) on the two transverse limiting ribs (211), the front end of the traction wire body handle (1201) of the first upper clamping arm traction wire handle (121) is connected to the rear end of the first rotating connecting member (22), and when the traction wire body handle (1201) of the first upper clamping arm traction wire handle (121) is rotated relative to the locking box (21) to the non-locking position, the traction wire handle of the first upper clamping arm traction wire handle (121) can slide relative to the locking box (21) with the first rotating connecting member (22). The second rotation connecting piece (23) is installed in the second limiting groove (21102) on the two lateral limiting ribs (211), the front end of the traction wire main handle (1201) of the second upper clamping arm traction wire handle (122) is connected to the rear end of the second rotation connecting piece (23), when the traction wire main handle (1201) of the second upper clamping arm traction wire handle (122) rotates to the non-locking position relative to the locking box (21), the traction wire handle of the second upper clamping arm traction wire handle (122) can slide forward and backward relative to the locking box (21) with the second rotation connecting piece (23).

5. The clip applier cartridge delivery device of claim 4, wherein, The rear end of the first rotation connecting piece (22) is provided with a first clamping protrusion (221), and the rear end of the second rotation connecting piece (23) is provided with a second clamping protrusion (231); The front end of the traction wire main handle (1201) of the first upper clamping arm traction wire handle (121) is provided with a first clamping groove (12011), and the front end of the traction wire main handle (1201) of the second upper clamping arm traction wire handle (122) is provided with a second clamping groove (12012), the first clamping groove (12011) and the second clamping groove (12012) respectively include an axial groove and a transverse groove communicated with the axial groove; The front end of the traction wire main handle (1201) of the first upper clamping arm traction wire handle (121) is sleeved on the rear end of the first rotation connecting piece (22), and the first clamping protrusion (221) is clamped in the transverse groove of the first clamping groove (12011); The front end of the traction wire main handle (1201) of the second upper clamping arm traction wire handle (122) is sleeved on the rear end of the second rotation connecting piece (23), and the second clamping protrusion (231) is clamped in the transverse groove of the second clamping groove (12012).

6. The clip applier cartridge delivery device of claim 5, wherein, The first rotation connecting piece (22) and the second rotation connecting piece (23) respectively include a tubular body extending in the axial direction, the first clamping protrusion (221) and the second clamping protrusion (231) respectively include two, the two first clamping protrusions (221) are symmetrically arranged on the outer peripheral surface of the tubular body of the first rotation connecting piece (22), and the two second clamping protrusions (231) are symmetrically arranged on the outer peripheral surface of the tubular body of the second rotation connecting piece (23); The first clamping groove (12011) and the second clamping groove (12012) are respectively provided with two, the two first clamping grooves (12011) correspond to the two first clamping protrusions (221) one by one, and the two second clamping grooves (12012) correspond to the two second clamping protrusions (231) one by one.

7. The forceps delivery device of claim 5, wherein, A compression washer (24) is further arranged between the outer circumferential surface of the first rotary connecting piece (22) and the inner circumferential surface of the front end of the traction wire main body handle (1201) of the first upper clamping arm traction wire handle (121), and between the outer circumferential surface of the second rotary connecting piece (23) and the inner circumferential surface of the front end of the traction wire main body handle (1201) of the second upper clamping arm traction wire handle (122).

8. The forceps delivery device of claim 1, wherein: One side of the main handle shell (11) is provided with a locking box mounting cavity, the front end of the locking box (21) is arranged inside the locking box mounting cavity, and the rear end of the locking box (21) is arranged outside the locking box mounting cavity; A threaded hole penetrating the shell wall of the main handle shell (11) is arranged on the shell wall of the main handle shell (11) corresponding to the locking box mounting cavity, and a locking groove and an unlocking groove are arranged on the outer surface of the locking box (21) corresponding to the threaded hole and spaced apart along the axial direction of the locking box (21); The threaded rod of the locking screw penetrates and is threadedly connected to the threaded hole, and the end of the threaded rod of the locking screw abuts against the locking groove or the unlocking groove to lock or unlock the locking box (21) to the main handle shell (11).

9. A forceps (100) delivery system characterized by: The forceps delivery device of any one of claims 1 to 8.

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