CN114129303B - Medical instrument conveying system - Google Patents
Medical instrument conveying system Download PDFInfo
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- CN114129303B CN114129303B CN202111463467.6A CN202111463467A CN114129303B CN 114129303 B CN114129303 B CN 114129303B CN 202111463467 A CN202111463467 A CN 202111463467A CN 114129303 B CN114129303 B CN 114129303B
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- Prior art keywords
- knob
- stroke seat
- medical instrument
- unit
- connecting rod
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
- A61F2/2442—Annuloplasty rings or inserts for correcting the valve shape; Implants for improving the function of a native heart valve
- A61F2/2466—Delivery devices therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
- A61F2/2442—Annuloplasty rings or inserts for correcting the valve shape; Implants for improving the function of a native heart valve
- A61F2/246—Devices for obstructing a leak through a native valve in a closed condition
Abstract
The invention discloses a medical instrument conveying system, which comprises: at least one delivery unit for providing a delivery channel for the implant unit; the implantation unit is nested in the delivery channel at the innermost layer at one end and can extend to a target position along the delivery channel; the medical instrument is connected to one end of the implantation unit, the implantation unit comprises a stroke seat and a plurality of knobs, wherein the first knob is used for adjusting the position of the stroke seat so as to enable the medical instrument to open or close the clamping mechanism at a target position, and the other knobs are respectively used for adjusting corresponding devices in the stroke seat so as to control the working state of the medical instrument. According to the invention, the stroke seat is independently controlled by the first knob to control the opening and closing of the medical instrument, so that the situation that the operation is influenced due to unnecessary locking of the locking mechanism can be avoided. And then only when other knobs control corresponding devices in the stroke seat, the corresponding mechanisms of the instrument can be controlled to act, such as the working state of the locking mechanism, so that the safety and the convenience of operation are improved.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a medical instrument conveying system.
Background
The valvular heart disease is one of the most common heart diseases in China, wherein the valvular damage is mainly caused by rheumatic fever; with the development of aging population in recent years, valve degeneration (including calcification, mucus degeneration and the like) and metabolic disorder valve damage are increasing in China. Mitral regurgitation is characterized by the retrograde flow of blood from the left ventricle to the left atrium of the heart through an incompetent mitral valve. During the normal systolic cycle, the mitral valve acts as a check valve preventing the backflow of oxygenated blood into the left atrium, so that the oxygenated blood is pumped through the aortic valve to the aorta and then throughout the body. Mitral regurgitation can significantly reduce the pumping efficiency of the heart, placing the patient at risk for severe, progressive heart failure. The most common treatment for mitral regurgitation relies on valve replacement or repair, including leaflet and annulus remodeling, commonly referred to as valvuloplasty. Although all of these techniques are very effective, patient recovery is slow because they rely on an open chest, which is a major surgical trauma. Patent document CN113456297a provides a particularly advantageous valve tissue clamping device, the control logic of which is special, and no control delivery system of this clamping device is available on the market.
In view of the delivery and control problems with current devices and the urgent need of medical personnel, there is a great need in the art for a delivery and control system to achieve control of the clip.
Disclosure of Invention
To overcome the above problems, the present invention provides a medical device delivery system. Which enables control of the delivery and working conditions of the clamping device mentioned in the background patent document. According to the invention, the stroke seat is independently controlled by the first knob to control the opening and closing of the medical instrument, so that the situation that the operation is influenced due to unnecessary locking of the locking mechanism can be avoided. And then only when other knobs control corresponding devices in the stroke seat, the corresponding mechanisms of the instrument can be controlled to act, such as the working state of the locking mechanism, so that the safety and the convenience of operation are improved. The shape of the conveying pipe can be conveniently and quickly adjusted through stretching and releasing of the stay wire, the stay wire is light in weight and does not occupy too much volume, the weight of the instrument can be obviously reduced, the production and manufacturing cost is reduced, and the operation is convenient. Through the cooperation of spiral pipe and slider, and the screw thread at the both ends of spiral pipe revolves to opposite, consequently when rotating the spiral pipe, can promote two sliders in step to opposite direction translations to synchronous control act as go-between motion, the aforesaid sets up the degree of difficulty that has reduced the curved regulation of accuse, only needs to rotate the spiral pipe can two act as go-between actions of synchronous control, greatly reduces the operation degree of difficulty, improves operating efficiency. The release pipe provided by the invention can control the connection state of the conveying system and the medical instrument and also can control the locking state of the locking mechanism of the medical instrument, and two operations are realized through one element, so that the structural complexity and the manufacturing cost are reduced, the operation of a user is facilitated, and the efficiency is improved. The safety unit is used with the trip seat of the release pipe in a matched mode, so that the safety of the operation can be improved, and misoperation is avoided.
To achieve the above object, according to an aspect of an embodiment of the present invention, there is provided a medical device delivery system including:
at least one delivery unit for providing a delivery channel for the implant unit;
the implantation unit is nested in the delivery channel at the innermost layer at one end and can extend to a target position along the delivery channel;
the medical instrument is connected to the one end of the implantation unit, the implantation unit comprises a stroke seat and a plurality of knobs, wherein the first knob is used for adjusting the position of the stroke seat so as to enable the medical instrument to open or close the clamping mechanism at a target position, and the other knobs are respectively used for adjusting corresponding devices in the stroke seat so as to control the working state of the medical instrument.
Optionally, the delivery unit includes a delivery pipe, and the delivery pipe forms the delivery channel inside; the end part of the conveying pipe, which extends into the human body, is provided with a stay wire fixing part, one end of a stay wire is fixed on the stay wire fixing part, the other end of the stay wire is fixed on a sliding block at the operation end of the conveying unit, and the position of the sliding block is controlled to pull the stay wire so as to adjust the bending shape of the conveying pipe.
Optionally, the slide block, the pull wire and the pull wire fixing part are divided into two groups, one end of the pull wire in each group is connected with the pull wire fixing part in the group, and the other end of the pull wire in each group is connected with the slide block in the group;
the operating end also comprises a spiral pipe, the rotating direction of the front end thread of the spiral pipe is opposite to that of the rear end thread, the front end thread is in driving connection with one sliding block, and the rear end thread is in driving connection with the other sliding block.
Optionally, the operating end is further provided with a sliding groove, and the sliding groove is matched with the sliding block to limit the rotation of the sliding block.
Optionally, the implant unit further comprises a connecting rod and a release tube;
the stroke seat comprises a connecting rod stroke seat, a release pipe stroke seat, a lower clamp stroke seat and a lower clamp stroke seat screw rod;
wherein the content of the first and second substances,
one end of the connecting rod is connected with the medical instrument, and the other end of the connecting rod is fixed on a connecting point of the connecting rod stroke seat;
one end of the release pipe is arranged in the medical instrument in a sliding manner, and the other end of the release pipe is fixed on a connection point of a release pipe stroke seat;
the lower clamp stroke seat is respectively connected with the connecting rod stroke seat and the release pipe stroke seat in a sliding manner;
the thread section of the screw rod of the lower clamping stroke seat is in threaded connection with the end part of the lower clamping stroke seat;
the first knob is used for adjusting the position of the stroke seat and comprises the following steps: the first knob controls the screw rod of the lower clamping stroke seat to rotate so as to realize synchronous adjustment of the positions of the lower clamping stroke seat, the connecting rod stroke seat and the release pipe stroke seat.
Optionally, the first knob comprises knob bevel teeth, and the lower clamping stroke seat screw rod comprises bevel teeth engaged with the knob bevel teeth;
the implantation unit also comprises a release pipe screw rod and a connecting rod screw rod; wherein
The thread section of the release pipe screw is in threaded connection with the release pipe stroke seat; the thread section of the connecting rod screw is in threaded connection with the connecting rod stroke seat.
Optionally, the remaining knobs comprise a second knob and a third knob, wherein,
the second knob comprises knob bevel gears, and the release pipe screw comprises bevel gears meshed with the knob bevel gears of the second knob;
the third knob comprises knob bevel gears, and the connecting rod screw rod comprises bevel gears meshed with the knob bevel gears of the third knob.
Optionally, the first knob is rotated to synchronously push the release tube and the connecting rod to the foremost end, so that the clamping part of the medical instrument is completely opened, and the medical instrument is in an unlocked state.
Optionally, the first knob is rotated to enable the release tube and the connecting rod to synchronously move backwards, so that the clamping part of the medical instrument is gradually closed, and the medical instrument is in an unlocked state.
Optionally, rotating the second knob moves the release tube rearward, placing the medical device in a locked state with the clamping member of the medical device remaining in a closed state.
Optionally, a safety unit is further inserted into the lower clamp stroke seat, and the safety unit is used for limiting the backward movement position of the release pipe so as to prevent the end of the connecting rod from being disconnected from the medical instrument.
Optionally, the safety unit comprises a safety pin rod, a bolt and a safety bolt; the safety bolt is inserted into the rear end of the release pipe row Cheng from a through hole in the shell of the implantation unit; the safety pin rod is rotatably connected to one end of the safety bolt and is positioned outside the shell; the safety pin rod drives the lock tongue to rotate.
Optionally, a notch matched with the lock tongue is formed in the shell; when the safety pin rod rotates to be parallel to the axis of the shell, the lock tongue is positioned in the notch to limit the retreating position of the release pipe stroke seat; when the safety pin rod rotates to be vertical to the axis of the shell, the lock tongue leaves the notch so as to be convenient for pulling the safety mechanism out of the shell, and the position limitation on the trip seat of the release pipe is removed.
Optionally, the implantation unit further comprises an upper clamping and pulling wire control unit, one end of the upper clamping and pulling wire is connected with the auxiliary clamping arm of the medical instrument, and the other end of the upper clamping and pulling wire is connected with the upper clamping and pulling wire control unit.
Optionally, a display groove is formed in the shell of the conveying unit, a display element is installed in the display groove, and the display element is in threaded fit with the spiral pipe of the conveying unit.
The technical scheme of the invention has the following advantages or beneficial effects:
(1) According to the invention, the stroke seat is independently controlled by the first knob to control the opening and closing of the medical instrument, so that the situation that the operation is influenced due to unnecessary locking of the locking mechanism can be avoided. And then only when other knobs control corresponding devices in the stroke seat, the corresponding mechanisms of the instrument can be controlled to act, such as the working state of the locking mechanism, so that the safety and the convenience of operation are improved.
(2) The invention can conveniently and rapidly adjust the shape of the conveying pipe by stretching and releasing the stay wire, has light weight of the stay wire, does not occupy excessive volume, can obviously reduce the weight of the instrument, reduces the production and manufacturing cost, and is convenient for operation. The two groups of pull wires can be arranged to adjust the bending shape in two directions on a plane, so that the adjustable range and the operation flexibility are increased.
(3) According to the invention, the spiral tube is matched with the sliding blocks, and the thread turning directions of the two ends of the spiral tube are opposite, so that the two sliding blocks can be synchronously pushed to translate in opposite directions when the spiral tube is rotated, and the movement of the stay wires is synchronously controlled.
(4) The release pipe provided by the invention can control the connection state of the conveying system and the medical instrument and also can control the locking state of the locking mechanism of the medical instrument, and two operations are realized through one element, so that the structural complexity and the manufacturing cost are reduced, the operation of a user is facilitated, and the efficiency is improved.
(5) The safety unit is matched with the trip seat of the release pipe for use, so that the safety of the operation can be improved, and the misoperation can be avoided; the safety unit is arranged, so that the stroke of the instrument control mechanism can be accurately controlled, the control accuracy is improved, misoperation is avoided, and the operation risk is reduced.
(6) The safety pin rod is arranged to facilitate the insertion and the extraction of the safety mechanism and the control of the motion state of the lock tongue; the arrangement of the lock tongue can improve the installation stability of the instrument, and meanwhile, the mode of locking the safety mechanism is simplified, and the cost of the implanted unit is reduced.
(7) The display groove and the display element can accurately and conveniently control the bent shape of the conveying pipe of the conveying unit.
Drawings
The drawings are included to provide a better understanding of the invention and are not to be construed as unduly limiting the invention. Wherein:
FIG. 1 is a schematic view of a delivery system according to an embodiment of the present invention in use;
FIG. 2 is a partial exploded view of an implanted unit of an embodiment of the invention;
FIG. 3 is a partial exploded view of the travel base of an embodiment of the present invention;
FIG. 4 is a partial schematic view of a stroker seat according to an embodiment of the invention;
FIG. 5 is an exploded view of a delivery unit of an embodiment of the present invention;
FIG. 6 is a cross-sectional schematic view of a delivery unit of an embodiment of the present invention;
FIG. 7 is an enlarged end view of an implant unit according to an embodiment of the present invention;
FIG. 8 is a schematic cross-sectional view of an implant unit of an embodiment of the present invention;
FIGS. 9-12 are schematic views of an implant unit control process according to an embodiment of the present invention;
FIG. 13 is a schematic diagram of a security unit of an embodiment of the present invention;
FIG. 14 is a schematic cross-sectional view of a security unit of an embodiment of the invention;
FIG. 15 is a cross-sectional schematic view of an assembled state of the safety unit of the embodiment of the present invention;
fig. 16 to 17 are schematic diagrams of the display structure of the conveying unit of the embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention are described below with reference to the accompanying drawings, in which various details of embodiments of the invention are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
According to an aspect of an embodiment of the present invention, a medical device delivery system is provided. The delivery system can deliver the human body implantation instrument to target tissues, and control all parts of the implantation instrument so as to enable the implantation instrument to complete the operation. As discussed in the background section, one embodiment of the present invention provides a delivery system that is particularly suited for delivery and control of clamping devices to address the problem of non-matching delivery systems for devices as mentioned in the background section. Therefore, the present application refers to the patent document CN113456297a in its entirety, and describes the working principle of the present invention for the medical device.
The delivery system described herein is capable of not only accomplishing the delivery task of the instrument, but also controlling the motion of the instrument to accomplish the intended surgical procedure. As shown in fig. 1, the clamping device is mainly used for treating heart diseases. The cross-sectional view of the heart includes the right atrium 10, the tricuspid annulus 11, the interatrial septum 14, the left atrium 15, the mitral valve posterior valve 17, the mitral valve anterior valve 19, the left ventricle 20, and the right ventricle 21. The delivery system enters the right atrium through the right iliac vein 13 and the inferior vena cava 12, and then the head 16 of the sheath extends into the left atrium, delivering the clamping device (or called medical device) 18 to the target position. In particular, the delivery system includes at least one delivery unit for providing a delivery channel for the implant unit 381. The number of the conveying units can be flexibly set according to requirements in use, and in the embodiment shown in fig. 1, the clamping device needs to turn two bends in the process of reaching the target position, so that two conveying units 101 and 201 are needed, and each conveying unit can respectively complete one bending adjusting action. For the sake of convenience of distinction, the conveying unit 101 is hereinafter referred to as a guide handle 101, and the conveying unit 201 is referred to as a conveying handle 201. In actual use, the introducer handle is accessed from the medial thigh inferior vena cava, as shown in fig. 1, and a relatively rigid pathway is established through the fossa ovalis by adjusting the curve. And the guide handle can reach the target position by adjusting the curved shape of the head. The tip of the delivery handle functions to pass from inside the guide handle and protrude from the head, creating a pathway from above the fossa ovalis to directly above the valve. The delivery handle can reach the target position by adjusting the curved shape of the head. The implantation unit has no bending function, but can achieve the purpose of enabling the valve clamping device to be close to or far away from the valve ring by stretching and retracting in the delivery handle, and the main function of the implantation unit is to control the clamping device. When there are multiple conveyor units, each conveyor unit may be nested. In fact, the sheath of the delivery unit, which is primarily the inner layer, nests within the sheath of the delivery unit, which is the outer layer. By adopting a multilayer nested structure, the sheath tube at the inner layer can fully utilize the shape of the sheath tube at the outer layer which is already bent in place, and the clamping instrument can conveniently reach a target position along a bent path. One end of the implant unit 381 is nested within the delivery channel of the inner layer. It will be appreciated that when only one delivery unit is present, the one end of the implant unit is located within the delivery channel of that delivery unit (i.e. the internal channel of the sheath); when a multi-layered delivery unit is present, the one end of the implant unit, i.e., within the delivery channel of the innermost delivery unit (i.e., the internal channel of the sheath), may extend along the delivery channel to the target location. In the configuration shown in fig. 1, the tubes of the two delivery units and the implantation unit are nested with the guide handle tube at the outermost layer, the delivery handle tube at the middle layer and the implantation unit tube inside. In practice, the end of the implant unit needs to be connected to a clamping device to deliver the clamping device to the target site. As shown in fig. 2-4, the implant unit comprises a travel block and a number of knobs, including in the embodiment shown in fig. 2 a first knob 301, a second knob 302 and a third knob 303. In one embodiment, a first knob 301 is used to adjust the position of the stroke seat to cause the medical device to open or close the clamping mechanism at the target position, and the remaining knobs are used to adjust the corresponding devices in the stroke seat to control the working state of the medical device. It can be understood that, this control method requires that each element or device for controlling the clamping apparatus is connected to the stroke seat, so as to indirectly adjust the opening or closing of the clamping mechanism of the clamping apparatus, or the clamping mechanism, by controlling the displacement of the stroke seat. In one embodiment, the means for attachment to the travel base may be a release tube and a connecting rod, which are separate and independently controlled to achieve different operational objectives, as will be described in more detail below. According to the invention, the stroke seat is independently controlled by the first knob to control the opening and closing of the medical instrument, so that the situation that the operation is influenced due to unnecessary locking of the locking mechanism can be avoided. And then only when other knobs control corresponding devices in the stroke seat, the corresponding mechanisms of the instrument can be controlled to act, such as the working state of the locking mechanism, so that the safety and the convenience of operation are improved.
Alternatively, as shown in the embodiment of fig. 5-6, the delivery unit includes a delivery pipe 111, and a delivery channel is formed inside the delivery pipe 111; the end of the delivery tube that goes deep into the human body is provided with a stay wire fixing part 120. In the embodiment shown in fig. 6, two wire fixing portions are symmetrically arranged in the plane of the cross section and are respectively positioned at the upper end and the lower end of the cross section. One end of the wires 121 and 122 is fixed to the wire fixing portion, and the other end of the wires is fixed to the sliders 118 and 115 at the operation end of the transport unit, and the bent shape of the transport pipe is adjusted by pulling the wires by controlling the position of the sliders. As shown in fig. 6, the pulling wire 121 may be pulled to the right while releasing the pulling wire 122 to the left, thereby bending the end of the transport tube 111 upward in the longitudinal section shown in fig. 6. The bending amount can be controlled by controlling the stretching and releasing amount of the stay wire. It will be appreciated that the number of conveyor units required is set according to the need to control the number of bends. The respective conveying units may have the same or different structures. When a plurality of conveying units are adopted, the conveying pipes of the conveying units can be nested for use, namely, the conveying pipe at the inner layer can extend along the curved shape of the conveying pipe at the outer layer, and after the conveying pipe reaches the target position, the curved shape of the end part of the conveying pipe of the conveying unit at the inner layer is controlled, so that the required curved path is formed step by step. The invention can conveniently and rapidly adjust the shape of the conveying pipe by stretching and releasing the stay wire, has light weight of the stay wire, does not occupy excessive volume, can obviously reduce the weight of the instrument, reduces the production and manufacturing cost, and is convenient for operation. As shown in fig. 6, in order to avoid environmental pollution and facilitate the evacuation of the air inside the instrument during the operation, the tail of the delivery unit is further provided with a sealing gasket 126 to seal the instrument, and the inner cavity of the delivery unit is also communicated with an evacuation pipe 127 to evacuate the air inside.
Alternatively, the embodiment shown in fig. 5-6 only needs to control the bending form of the end of the conveying pipe in a plane, so that the sliding blocks, the pull wires and the pull wire fixing parts are arranged into two groups, one end of each pull wire in each group is connected with the pull wire fixing part in the group, and the other end of each pull wire in each group is connected with the sliding block in the group. Specifically, one end of the pull wire 121 is connected to the pull wire fixing part 120 in the group, and the other end is connected to the slider 115 in the group; one end of the pulling wire 122 is connected with the pulling wire fixing part 120 in the group, and the other end is connected with the sliding block 118 in the group. The slide block 118 is provided with a connecting part 113 for connecting a pull wire; the slider 115 is provided with a connecting part 114 for connecting a pulling wire. The operating end further comprises a spiral pipe 124, the spiral pipe 124 is provided with a front thread 112 with the opposite direction to a rear thread, the front thread is in driving connection with the sliding block 118, and the rear thread is in driving connection with the sliding block 115. In addition, in order to avoid the rotation of the two sliding blocks along with the spiral pipe 124, the operating end is further provided with a sliding groove 123 extending along the axial direction, and the end parts of the two sliding blocks are clamped in the sliding groove, so that the two sliding blocks can only be pushed by the spiral pipe 124 in a translation mode. Because the screw threads at the two ends of the spiral tube are opposite in rotating direction, the two sliding blocks can be synchronously pushed to translate in opposite directions when the spiral tube is rotated, and therefore the movement of the stay wire is synchronously controlled. To facilitate manipulation of the coil, an embodiment is further provided with a bending control knob 125, which is fixedly connected to the coil, so that rotation of the coil can be controlled by rotating the bending control knob. Optionally, the outer surface of the bending control knob is provided with a friction structure such as knurling and the like so as to facilitate the operation and control of the instrument.
Optionally, the operating end is further provided with a sliding groove 123, and the sliding groove and the sliding block are matched to limit the rotation of the sliding block, so that the two sliding blocks can only translate back and forth along the axis of the conveying unit.
Alternatively, as shown in the embodiment of figures 7 and 8, the end of the implant unit is provided with a multi-lumen adapter 323, said multi-lumen adapter 323 being hollow inside and adapted to receive part of the control elements of the implant unit inside. In one embodiment, the implant unit further comprises a connecting rod 321 and a release tube 322, said stroke seat comprising a connecting rod stroke seat 340, a release tube row Cheng, a lower clamp stroke seat 343, and a lower clamp stroke seat screw 333. Wherein, the one end of connecting rod 321 with medical instrument connects, is connected for dismantling between the tip of connecting rod and the tie point of medical instrument, and after accomplishing the operation, steerable release pipe leaves tie point position, remove right can dismantle the restraint of connecting, and then steerable connecting rod and medical instrument separation. The other end of the connecting rod is fixed on a connecting point 339 of the connecting rod stroke seat; therefore, when the front and back positions of the connecting rod stroke seat are controlled, the position of the end part of the connecting rod can be directly controlled, and further the working state of the medical appliance in a human body is controlled. One end of the release pipe 322 is slidably arranged in the medical instrument, and the position of the release pipe in the medical instrument can be adjusted through the sliding arrangement, so that the locking mechanism of the medical instrument is controlled to be switched between a locking state and a non-locking state, and the aim of controlling one working state of the medical instrument is fulfilled. The other end of the release pipe is fixed on a connection point 341 of a release pipe stroke seat 342; therefore, the position of the release pipe in the medical instrument is adjusted by controlling the position of the release pipe stroke seat, and the working state of the medical instrument is further controlled. The lower clamp stroke seat 343 is respectively connected with the connecting rod stroke seat 340 and the release pipe stroke seat 342 in a sliding manner; so that the connecting rod stroke seat 340 and the release pipe stroke seat 342 can be controlled to slide in the lower clamping stroke seat to adjust the position, and then the position of the release pipe and the connecting rod connected with the connecting rod can be adjusted. The threaded section 311 of the lower clamping stroke seat screw 333 is in threaded connection with the end of the lower clamping stroke seat 343, so that the position of the lower clamping stroke seat is adjusted by rotating the lower clamping stroke seat screw. The outer side of the end of the lower clamp stroke seat is provided with a slide block 312, and the slide block 312 is matched with a corresponding slide groove (not shown in the figure) to limit the rotation of the lower clamp stroke seat, so that the lower clamp stroke seat can only move back and forth. The first knob 301 for adjusting the position of the stroke seat includes: the first knob 301 is rotated to control the lower clamping stroke seat screw 333 to rotate so as to realize synchronous adjustment of the positions of the lower clamping stroke seat, the connecting rod stroke seat and the release pipe stroke seat, thereby adjusting the opening and closing states of the medical instrument.
Optionally, as shown in fig. 8, the first knob comprises knob teeth 332, and the lower clamping stroke seat screw 333 comprises teeth engaged with the knob teeth; by the meshing relationship of the bevel gears, the screw 333 of the lower clamp stroke seat can be rotated when the first knob is rotated, and the position of the lower clamp stroke seat can be changed. The implant unit further comprises a release tube screw 335 and a connecting rod screw 338; wherein the threaded section 305 of the release tube screw 335 is in threaded connection with the release tube travel block; the threaded section 308 of the connecting rod screw 338 is threadedly connected to the connecting rod travel socket. In the embodiment shown in fig. 8, the left end of the release pipe screw is positioned to be clamped with the lower clamp stroke seat, the clamping positioning enables the release pipe screw to only rotate along the axis and not move along the axis, and the left end of the connecting rod screw is positioned to be clamped with the lower clamp stroke seat, the clamping positioning enables the release pipe screw to only rotate along the axis and not move along the axis. When the release pipe screw and the connecting rod screw are respectively in threaded connection with the corresponding release pipe row Cheng and the connecting rod stroke seat, the release pipe row Cheng and the connecting rod stroke seat are relatively positioned in the lower clamping stroke seat, and only after the release pipe screw and the connecting rod stroke seat screw rotate, the release pipe row Cheng and the connecting rod stroke seat respectively move axially. As shown in fig. 3, in order to avoid the rotation of the trip pipe stroke seat and the connecting rod stroke seat, the periphery of the trip pipe stroke seat is provided with a slide block 306 which is matched with a corresponding sliding groove (not shown in the figure) to limit the rotation of the trip pipe stroke seat; the periphery of the connecting rod travel base is provided with a slider 309 which cooperates with a corresponding runner (not shown in the figures) to limit the rotation of the connecting rod travel base.
Optionally, the other knobs include a second knob 302 and a third knob 303, wherein the second knob includes knob teeth 334, the release tube screw includes teeth engaged with the knob teeth of the second knob, as shown in the left side of the release tube screw in fig. 8; the third knob comprises knob bevel 337, and the connecting rod screw comprises bevel engaged with the knob bevel of the third knob, as detailed on the left side of the connecting rod screw in fig. 8. The corresponding bevel gear can be driven to rotate through the second knob or the third knob, and then the corresponding release pipe screw or the connecting rod screw is driven to rotate respectively, and then the corresponding release stroke seat or the corresponding connecting rod stroke seat is controlled to move respectively, and finally the purpose of adjusting the positions of the release pipe or the connecting rod respectively is achieved.
Optionally, in practical use, the first knob may be rotated to push the release tube and the connecting rod to the foremost end synchronously, so that the clamping member of the medical device is fully opened, and the medical device is in the unlocked state. As mentioned above, the first knob is used to drive the screw of the lower clamp stroke seat to rotate, which will drive the lower clamp stroke seat to move, so that each component connected with the lower clamp stroke seat will move synchronously and in the same direction with the lower clamp stroke seat. As shown in fig. 9, when the connecting rod 321 is connected to the clamping component counter-element 350 of the medical device, and the release tube is controlled to move and abut against the step of the counter-element, the connecting point of the connecting rod 321 and the counter-element can be restrained, and the locking mechanism of the medical device can be in an unlocked state. At the moment, the first knob is rotated to synchronously push the release pipe and the connecting rod to the foremost end, so that the clamping part of the medical instrument is completely opened.
Alternatively, as shown in fig. 10, when the first knob is rotated to synchronously move the release tube and the connecting rod backward, the clamping part of the medical device is gradually closed, and the release tube is still pressed against the unlocking part of the locking mechanism because the position of the release tube relative to the locking mechanism is not changed, so that the medical device is in an unlocked state.
Alternatively, as shown in fig. 11, which is a further control of the situation shown in fig. 10, specifically, the second knob is turned to move the release tube backward alone to release the pressing action of the release tube on the unlocking portion of the locking structure, so that the medical device is switched from the unlocked state to the locked state and is in the locked state, and at this time, the clamping component of the medical device is kept in the closed state because the position of the hand piece is not changed. It will be appreciated that when the clamping state of the medical device is not satisfactory, the second knob can be rotated in the reverse direction and the release tube can be independently controlled to move forward to unlock the medical device, and the clamping parts of the medical device can be kept in the closed state. After the operation is completed, the first knob can be operated repeatedly under the unlocking state of the medical instrument, and the clamping state of the medical instrument is adjusted repeatedly to obtain the required effect.
Optionally, a safety unit 336 is further inserted on the lower clamp stroke seat, and the safety unit is used for limiting the backward movement position of the release pipe so as to prevent the end of the connecting rod from being disconnected from the medical instrument. Specifically, after the safety unit 336 is pulled out, the backward movement restriction of the trip tube stroke seat is released, and then the second knob can be further rotated to control the backward movement of the trip tube stroke seat so as to drive the trip tube to move backward, and finally the position shown in fig. 12 is reached. At the moment, the release pipe is separated from the connecting point between the connecting rod and the hand piece, namely the constraint on the connecting point is released; the connecting rod can now be controlled to separate from the counter element and withdraw the implant unit. Wherein the safety unit has a pin 304 to facilitate operation of the safety unit. The release pipe provided by the invention can control the connection state of the conveying system and the medical instrument and also can control the locking state of the locking mechanism of the medical instrument, and two operations are realized through one element, so that the structural complexity and the manufacturing cost are reduced, the operation of a user is facilitated, and the efficiency is improved. In addition, the safety unit is used with the trip seat of the release pipe in a matched mode, so that the safety of the operation can be improved, and misoperation is avoided.
Optionally, the implanting unit further includes an upper clamping and pulling line control unit 331, one end of the upper clamping and pulling line is connected to the auxiliary clamping arm of the medical device, and the other end of the upper clamping and pulling line is connected to the upper clamping and pulling line control unit. Through the connection, the upper clamp stay wire control unit can be controlled to act so as to adjust the movement of the upper clamp stay wire, and further adjust the opening and closing angle of the upper clamp of the medical instrument.
Alternatively, as in the embodiment shown in fig. 13-15, the safety unit includes a safety pin 401, a locking tongue 402, and a safety bolt 403; the safety bolt is inserted into the rear end of the releasing pipe row Cheng from the through hole on the shell 400; the safety pin rod is rotatably connected to one end of the safety bolt and is positioned outside the shell of the implantation unit; the safety pin rod drives the lock tongue to rotate. In the embodiment, the safety pin rod is arranged to facilitate the insertion and the extraction of the safety mechanism and the control of the motion state of the lock tongue; the arrangement of the lock tongue can improve the installation stability of the instrument, and meanwhile, the mode of locking the safety unit is simplified, and the cost of the implanted unit is reduced.
Optionally, a notch matched with the lock tongue is formed in the shell; when the safety pin rod rotates to be parallel to the axis of the shell (as shown in a state of fig. 15), the lock tongue is positioned in the notch to limit the retreating position of the trip pipe seat; this parallel state also reduces the space occupied by the safety mechanism, making it less likely to affect the surgical procedure. When the safety pin rod rotates to be vertical to the axis of the shell, the lock tongue leaves the notch so as to be convenient for pulling the safety mechanism out of the shell, and the position limitation on the trip seat of the release pipe is removed. When the position limitation on the trip block of the release tube is released, the second knob can be continuously rotated to continuously retreat the release tube, and finally the release tube is completely withdrawn, so that the purpose of releasing the implanted component of the medical appliance is achieved.
Alternatively, as shown in fig. 16-17, in an alternative embodiment, the spiral pipe of the conveying unit has a ring of external threads 1603, the casing of the conveying unit has a display slot 1601, a display slide block 1602 is embedded in the display slot, and the display slide block has a groove matching with the external threads 1603. When the conveying unit is adjusted to control the bent shape of the end part of the conveying pipe, the spiral pipe drives the outer side display sliding block to move together. Therefore, the bending degree of the front conveying pipe can be conveniently judged from the handle side. It will be appreciated that the delivery tube is mostly inside the human body during surgery, and the operator usually needs an auxiliary device to judge the degree of bending of the delivery tube, but cannot quantify the degree of bending. Therefore, the design mode of the embodiment can judge the bending degree of the front conveying pipe from the handle end and carry out quantitative evaluation. The embodiment shown in fig. 17 shows how the degree of bending can be quantified by numerical values which can be pre-measured by numerical simulation or experimental means and then marked on the display slot.
The above-described embodiments should not be construed as limiting the scope of the invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions can occur, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (14)
1. A medical device delivery system, comprising:
at least one delivery unit for providing a delivery channel for the implant unit;
the implantation unit is nested in the delivery channel at the innermost layer at one end and can extend to a target position along the delivery channel;
the method is characterized in that:
the medical instrument is connected to one end of the implantation unit, the implantation unit comprises a stroke seat and a plurality of knobs, wherein the first knob is used for adjusting the position of the stroke seat so as to open or close a clamping mechanism of the medical instrument at a target position, and the rest knobs are respectively used for adjusting corresponding devices in the stroke seat so as to control the working state of the medical instrument;
the implant unit further comprises a connecting rod and a release tube;
the stroke seat comprises a connecting rod stroke seat, a release pipe stroke seat, a lower clamp stroke seat and a lower clamp stroke seat screw rod;
wherein the content of the first and second substances,
one end of the connecting rod is connected with the medical instrument, and the other end of the connecting rod is fixed on a connecting point of the connecting rod stroke seat;
one end of the release pipe is arranged in the medical instrument in a sliding manner, and the other end of the release pipe is fixed on a connection point of the release pipe stroke seat;
the lower clamp stroke seat is respectively connected with the connecting rod stroke seat and the release pipe stroke seat in a sliding manner;
the thread section of the screw rod of the lower clamping stroke seat is in threaded connection with the end part of the lower clamping stroke seat;
the first knob is used for adjusting the position of the stroke seat and comprises the following steps: the first knob controls the screw rod of the lower clamping stroke seat to rotate so as to realize synchronous adjustment of the positions of the lower clamping stroke seat, the connecting rod stroke seat and the release pipe stroke seat.
2. The delivery system of claim 1,
the conveying unit comprises a conveying pipe, and the conveying passage is formed inside the conveying pipe; the end part of the conveying pipe, which extends into the human body, is provided with a stay wire fixing part, one end of a stay wire is fixed on the stay wire fixing part, the other end of the stay wire is fixed on a sliding block at the operation end of the conveying unit, and the position of the sliding block is controlled to pull the stay wire so as to adjust the bending shape of the conveying pipe.
3. The conveying system according to claim 2,
the sliding blocks, the stay wires and the stay wire fixing parts are divided into two groups, one end of each stay wire in each group is connected with the stay wire fixing part in the group, and the other end of each stay wire in each group is connected with the sliding block in the group;
the operating end also comprises a spiral pipe, the rotating direction of the front end thread of the spiral pipe is opposite to that of the rear end thread, the front end thread is in driving connection with one sliding block, and the rear end thread is in driving connection with the other sliding block.
4. The delivery system of claim 3,
the operation end is also provided with a sliding groove, and the sliding groove is matched with the sliding block to limit the rotation of the sliding block.
5. The delivery system of claim 1,
the first knob comprises knob bevel gears, and the lower clamping stroke seat screw rod comprises bevel gears meshed with the knob bevel gears;
the implantation unit also comprises a release pipe screw rod and a connecting rod screw rod; wherein
The thread section of the release pipe screw is in threaded connection with the release pipe stroke seat; the thread section of the connecting rod screw is in threaded connection with the connecting rod stroke seat.
6. The delivery system of claim 5,
the other knobs comprise a second knob and a third knob, wherein,
the second knob comprises knob bevel gears, and the release pipe screw comprises bevel gears meshed with the knob bevel gears of the second knob;
the third knob comprises knob bevel gears, and the connecting rod screw rod comprises bevel gears meshed with the knob bevel gears of the third knob.
7. The delivery system of claim 6,
and rotating the first knob to enable the release pipe and the connecting rod to be synchronously pushed to the foremost end, so that the clamping mechanism of the medical instrument is completely opened, and the medical instrument is in an unlocked state.
8. The delivery system of claim 6,
and rotating the first knob to enable the release pipe and the connecting rod to synchronously move backwards, so that the clamping mechanism of the medical instrument is gradually closed, and the medical instrument is in an unlocked state.
9. The delivery system of claim 8,
and rotating the second knob to move the release pipe backwards to enable the medical instrument to be in a locking state, and keeping a clamping mechanism of the medical instrument in a closed state.
10. The delivery system of claim 9,
and a safety unit is inserted into the lower clamp stroke seat and used for limiting the backward movement position of the release pipe so as to prevent the end part of the connecting rod from being disconnected with the medical instrument.
11. The delivery system of claim 10,
the safety unit comprises a safety pin rod, a lock tongue and a safety bolt; the safety bolt is inserted into the rear end of the release pipe row Cheng from a through hole in the shell of the implantation unit; the safety pin rod is rotatably connected to one end of the safety bolt and is positioned outside the shell; the safety pin rod drives the lock tongue to rotate.
12. The delivery system of claim 11,
the shell is provided with a notch matched with the lock tongue; when the safety pin rod rotates to be parallel to the axis of the shell, the lock tongue is positioned in the notch to limit the retreating position of the release pipe stroke seat; when the safety pin rod rotates to be vertical to the axis of the shell, the lock tongue leaves the notch so as to be convenient for pulling the safety unit out of the shell, and the position limitation on the trip seat of the trip tube is removed.
13. The delivery system of claim 1,
the implantation unit further comprises an upper clamping stay wire control unit, one end of the upper clamping stay wire is connected with the auxiliary clamping arm of the medical instrument, and the other end of the upper clamping stay wire is connected with the upper clamping stay wire control unit.
14. The delivery system of claim 1,
the spiral pipe screw thread matching device is characterized in that a display groove is formed in the shell of the conveying unit, a display element is installed in the display groove, and the display element is in screw thread matching with the spiral pipe of the conveying unit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111463467.6A CN114129303B (en) | 2021-12-03 | 2021-12-03 | Medical instrument conveying system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111463467.6A CN114129303B (en) | 2021-12-03 | 2021-12-03 | Medical instrument conveying system |
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| CN114129303B true CN114129303B (en) | 2023-03-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115554078B (en) * | 2022-10-31 | 2023-09-12 | 上海汇禾医疗器械有限公司 | Stabilizing device for auxiliary interventional medical instrument system |
| CN116616955A (en) * | 2022-11-25 | 2023-08-22 | 苏州汇禾医疗科技有限公司 | Handle of implantation instrument |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103841899A (en) * | 2011-09-13 | 2014-06-04 | 艾博特心脏血管系统公司 | Gripper pusher mechanism for tissue apposition systems |
| CN112472364A (en) * | 2020-11-19 | 2021-03-12 | 上海捍宇医疗科技股份有限公司 | Conveying mechanism of valve clamping device |
| WO2021238035A1 (en) * | 2020-05-29 | 2021-12-02 | 迈特锐吉(北京)医疗科技有限公司 | Repair assembly and repair assembly implantation device |
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2021
- 2021-12-03 CN CN202111463467.6A patent/CN114129303B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103841899A (en) * | 2011-09-13 | 2014-06-04 | 艾博特心脏血管系统公司 | Gripper pusher mechanism for tissue apposition systems |
| WO2021238035A1 (en) * | 2020-05-29 | 2021-12-02 | 迈特锐吉(北京)医疗科技有限公司 | Repair assembly and repair assembly implantation device |
| CN112472364A (en) * | 2020-11-19 | 2021-03-12 | 上海捍宇医疗科技股份有限公司 | Conveying mechanism of valve clamping device |
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| CN114129303A (en) | 2022-03-04 |
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Address after: 201207 Room 303, building 5, No. 1158, Jiuting Central Road, Jiuting Town, Songjiang District, Shanghai Patentee after: Shanghai Huihe Medical Technology Co.,Ltd. Address before: 201207 Room 303, building 5, No. 1158, Jiuting Central Road, Jiuting Town, Songjiang District, Shanghai Patentee before: Shanghai Huihe Medical Technology Co.,Ltd. |