WO2023124899A1

WO2023124899A1 - Delivery device

Info

Publication number: WO2023124899A1
Application number: PCT/CN2022/137922
Authority: WO
Inventors: 夏紫阳; 吕成; 刘晓颖
Original assignee: 先健科技(深圳)有限公司
Priority date: 2021-12-31
Filing date: 2022-12-09
Publication date: 2023-07-06
Also published as: CN116407385A

Abstract

A delivery device (100), which is used for implanting a medical instrument into a human body. The delivery device (100) comprises a guide rod assembly (2), the guide rod assembly (2) being a hollow structure, and the guide rod assembly (2) comprising a guide rod main body (22), a sliding block (23), and a sealing member (24); the sliding block (23) is arranged in the guide rod main body (22), the sliding block (23) is able to slide relative to the guide rod main body (22), and a slide groove (221) is formed on the guide rod main body (22); the sealing member (24) is arranged at a position on the guide rod main body (22) corresponding to the slide groove (221), and part of the sliding block (23) is located above the sealing member (24) and is exposed outside of the guide rod main body (22). The sealing member (24) of the delivery device (100) can seal off the slide groove (221), preventing a glove or a bed sheet from becoming stuck within the slide groove (221), thereby preventing the glove from being split and the delivery device (100) from being damaged, thus avoiding ruining a sterile operating room environment and threatening the life and health of a surgeon and a patient.

Description

a conveyor

technical field

The invention relates to the field of interventional medicine, in particular to a conveyor.

Background technique

With the advancement of science and technology, the use of minimally invasive surgery to treat various diseases is becoming more and more popular. Minimally invasive surgery generally uses a transporter to implant medical devices (such as stents) into the human body through organs or blood vessels. In interventional clinical operations, the operator occasionally encounters an embarrassing situation during the operation of positioning and releasing instruments on the operating table. Taking reconstruction of the left subclavian artery LSA as an example, because of dissection or aneurysm in the descending aorta, the stent is passed through peripheral blood vessels at various levels such as femoral, iliac, abdominal, thoracic, brachial, and axillary arteries through a conveyor. sent to the aortic arch. The anatomical structure of human blood vessels is complex, and the release process has high resistance. Grasping the sliding handle and releasing the process will cause the protective gloves to get stuck into the conveyor, and clamped into the gap between the guide rod and the handle, causing inconvenience for doctors to operate. Severe cases can cause gloves to be pinched, destroying the sterile operating room environment and threatening the lives and health of operators and patients.

At the same time, in order to meet the needs of more patients and minimize the trauma to patients, the demand for sheath removal of conveyors has become an imperative in the industry. While bringing convenience, it also brings a little hidden danger. The resistance of the release process of the device in the narrower conveyor increases, which means that the doctor's grip on the handle is also required to be higher, and the gloves are stuck into the conveyor due to excessive extrusion. The possibility of the device has also increased. Simultaneously, the bed sheet on the hospital bed also has the possibility of being caught in the gap between the guide rod and the handle. Therefore, it is necessary to design a conveyor that prevents gloves or sheets from being caught in the gap between the guide rod and the handle.

Contents of the invention

In order to overcome the problems in the prior art, the invention provides a conveyor.

The solution to the technical problem of the present invention is to provide a conveyor for implanting medical instruments into the human body, the conveyor includes a guide rod assembly, the guide rod assembly is a hollow structure, and the guide rod assembly includes Guide rod main body, slider and seal, the slider is arranged in the guide rod main body, and the slider can slide relative to the guide rod main body, a chute is opened on the guide rod main body, the The sealing element is arranged on the position of the main body of the guide rod corresponding to the chute, and part of the sliding block is located above the sealing element and exposed outside the main body of the guiding rod.

In some embodiments of the present invention, the seal is fixedly arranged at a position of the guide rod body corresponding to the slide groove, and the seal is axially stationary relative to the guide rod body.

In some embodiments of the present invention, the two ends of the sealing member are fixed on the inner surface of the guide rod body at positions corresponding to the two ends of the chute, and the sealing member is provided with a slit along the length direction of the sealing member , part of the slider passes through the sealing element through the slit.

In some embodiments of the present invention, the two ends of the sealing member are provided with a first fixing member, and the inner surface of the guide rod main body is provided with a second fixing member at a position corresponding to the two ends of the chute, and the two ends of the sealing member are The first fixing pieces at the ends cooperate with the second fixing pieces at both ends of the chute respectively.

In some embodiments of the present invention, the slider is provided with a clamping part, the clamping part sequentially passes through the slit, the chute is exposed outside the main body of the guide rod, and the clamping part The part slides along the chute and the slit to drive the slider to slide.

In some embodiments of the present invention, part of the seal is connected to the slider, part of the seal is fixedly connected to the main body of the guide rod, and the part of the seal connected to the slider is connected to the slider. The sliders move together relative to the main body of the guide rod.

In some embodiments of the present invention, the distal end of the sealing member is connected with the slider, and the proximal end of the sealing member is fixed on the inner surface of the proximal end of the main body of the guide rod.

In some embodiments of the present invention, the sliding block is provided with a clamping part, the distal end of the sealing member is provided with a collar structure, the proximal end of the sealing member is provided with a first fixing member, and the main body of the guide rod A second fixing part is provided on the inner surface corresponding to the proximal end of the chute, the collar structure is sleeved on the engaging part, and the first fixing part cooperates with the second fixing part.

In some embodiments of the present invention, the conveyor further includes a handle assembly, the handle assembly includes a fixed handle and a movable handle, the fixed handle is connected to the distal end of the guide rod body, and the movable handle is sleeved on The main body of the guide rod is located on the proximal side of the fixed handle, and the movable handle can move relative to the main body of the guide rod.

In some embodiments of the present invention, a locking groove is provided on the inner wall of the movable handle, and part of the slider passes through the sealing member in sequence, and the sliding groove is exposed outside the main body of the guide rod and is connected with the The clamping groove cooperates, and the movement of the movable handle drives part of the slider to move along the chute and the sealing member, and then drives the slider to move.

In some embodiments of the present invention, the guide rod assembly further includes a connector, the connector is connected to the distal end of the guide rod body, and the connector is accommodated in the fixed handle, and the fixed handle A first baffle and a reinforcing rib are arranged inside, one end of the connecting head bears against the first baffle, and the reinforcing rib is arranged on a side of the first baffle away from the connecting head.

In some embodiments of the present invention, a second baffle is arranged inside the fixed handle, the first baffle and the second baffle are arranged at intervals, and the distal end of the connector passes through the second baffle. The baffle finally abuts against the first baffle.

In some embodiments of the present invention, the connector is provided with a first locking structure, and the first locking structure is located between the first baffle and the second baffle, when the When the connecting head abuts against the first baffle, the first locking structure abuts against the second baffle.

In some embodiments of the present invention, a second locking structure is provided on the second baffle, and when the first locking structure is opposed to the second baffle, the second locking structure The rotation of the connecting head is restricted.

In some embodiments of the present invention, a third baffle is arranged inside the fixed handle, the first baffle, the second baffle, and the third baffle are arranged at intervals, and the distal end of the connector is sequentially Pass through the third baffle, the second baffle and finally abut against the first baffle.

In some embodiments of the present invention, a locking slot is provided on the third baffle, and a third locking structure is provided at a position of the connecting head corresponding to the locking slot. When the connecting head and the When the first baffle abuts, the locking groove cooperates with the third locking structure.

In some embodiments of the present invention, the transporter further includes a sheath tube, the sheath tube enters from the distal end of the fixed handle, passes through the first baffle plate, the connecting head in sequence, and enters the The proximal end of the sheath tube is connected to the slider in the guide rod body, and the slider slides to drive the sheath tube to move.

In some embodiments of the present invention, a storage slot is provided at the proximal end of the movable handle, and the opening of the storage slot faces the proximal end of the conveyor.

Compared with the prior art, the conveyor of the present invention has the following advantages: the sealing member of the conveyor provided by the present invention can block the chute, preventing gloves or sheets from being caught in the chute. In order to prevent the gloves from being pinched and the conveyor damaged, thereby avoiding damage to the environment of the sterile operating room and threatening the life and health of the operator and the patient.

Description of drawings

Fig. 1 is a schematic perspective view of a conveyor provided by a first embodiment of the present invention.

Fig. 2 is a schematic cross-sectional structure diagram of the fixed handle and guide rod assembly of the conveyor provided by the first embodiment of the present invention.

Fig. 3 is a schematic diagram of the fixed handle part of the conveyor provided by the first embodiment of the present invention.

Fig. 4 is a schematic diagram of the exploded structure of the guide rod assembly of the conveyor provided by the first embodiment of the present invention.

Fig. 5 is another schematic cross-sectional structure diagram of the conveyor provided by the first embodiment of the present invention.

Fig. 6 is a schematic structural view of the sealing member of the conveyor provided by the first embodiment of the present invention.

Fig. 7 is a schematic cross-sectional structure diagram of the movable handle and the main body of the guide rod of the conveyor provided by the first embodiment of the present invention.

Fig. 8 is a schematic cross-sectional structure diagram of the movable handle and the main body of the guide rod of the conveyor provided by other embodiments of the present invention.

Fig. 9 is a schematic structural view of the sealing member of the conveyor provided by the second embodiment of the present invention.

Description of accompanying drawings: 100, conveyor; 1, handle assembly; 2, guide rod assembly; 3, sheath tube; 11, fixed handle; 12, movable handle; 21, connector; 22, guide rod main body; 111, the first A baffle; 112, reinforcing ribs; 211, first clamping structure; 113, second baffle; 114, third baffle; 115, second clamping structure; 116, clamping groove; 23, slider; 231. Clamping part; 212. Third clamping position structure; 221. Chute; 222. Second fixing part; 24. Sealing part; 121. Clamping slot; 241. First fixing part; 242. Slit; 122 , storage slot; 123, opening; 243, collar structure.

Detailed ways

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

It should be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may also be meant to include the plural forms unless the context clearly dictates otherwise. The terms "comprising", "comprising", "containing" and "having" are inclusive and thus indicate the presence of stated features, steps, operations, elements and/or parts but do not exclude the presence or addition of one or Various other features, steps, operations, elements, components, and/or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is specifically indicated. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be referred to as These terms are limited. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For the convenience of description, spatial relative terms may be used herein to describe the relationship of one element or feature as shown in the figures with respect to another element or feature, such as "inner", "outer", "inner". ", "Outside", "Below", "Below", "Above", "Above", etc. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "beneath" the other elements or features. feature above". Thus, the example term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In order to describe the structure of the present application more clearly, the terms "proximal end" and "distal end" are defined here as commonly used terms in the field of interventional medicine. Specifically, "distal end" refers to the end away from the operator during the operation, "proximal" refers to the end close to the operator during the operation, "axial" refers to its length direction, and "radial" refers to the end perpendicular to the "Axial" direction.

Please refer to Fig. 1 and Fig. 2, the first embodiment of the present invention provides a delivery device 100 for implanting medical devices into the human body, such as passing the stent through the delivery device 100 through various levels of peripheral blood vessels such as the femoral, iliac , abdominal main, thoracic main, brachial, axillary and other arteries are sent to the aortic arch. The delivery device 100 includes a handle assembly 1, a guide rod assembly 2, and a sheath tube 3. In a specific embodiment of the present invention, the handle assembly 1, the guide rod assembly 2, and the sheath tube 3 have a cylindrical structure as a whole. The handle assembly 1 can slide on the guide rod assembly 2 to control the movement of the sheath tube 3 . The distal end of the sheath tube 3 passes through the handle assembly 1 and is received in the guide rod assembly 2 . The handle assembly 1 includes a fixed handle 11 and a movable handle 12 , and the guide rod assembly 2 includes a connecting head 21 and a guide rod body 22 . One end of the connector 21 is fixedly connected to one end of the guide rod body 22, the connector 21 is accommodated in the fixed handle 11, the movable handle 12 is sleeved on the guide rod body 22, and the movable handle 12 is sleeved on the guide rod body 22. The handle 12 is located on the proximal side of the fixed handle 11 and the movable handle 12 can slide relative to the main body 22 of the guide rod.

The fixed handle 11 , the movable handle 12 , the connecting head 21 and the guide rod body 22 are all hollow structures. The distal end of the sheath tube 3 passes through the fixed handle 11 , the inside of the connecting head 21 in turn, and is finally stored in the inside of the guide rod body 22 . The connector 21 is internally connected with the fixed handle 11 and stored in the fixed handle 11, the movable handle 12 can be opposed to the fixed handle 11, and the movable handle 12 is at the starting position at this time . When the movable handle 12 is gradually moved away from the fixed handle 11, the sheath tube 3 will follow the movement of the movable handle 12, that is, more parts of the distal end of the sheath tube 3 will be received in the Inside the guide rod assembly 2.

Please refer to FIG. 1 and FIG. 2 , the fixed handle 11 is provided with a first baffle 111 and a reinforcing rib 112 , and the end of the connecting head 21 away from the guide rod assembly 2 is against the first baffle 111 , The reinforcing rib 112 is disposed on a side of the first baffle 111 away from the connecting head 21 . The sheath tube 3 enters from the end of the fixed handle 11 away from the guide rod assembly 2 , passes through the first baffle 111 and the connecting head 21 in sequence, and enters the guide rod main body 22 .

The first baffle 111 acts as a limit to the connecting head 21 , and further acts as a limit to the guide rod assembly 2 . The reinforcing ribs 112 can reinforce the first baffle 111 , preventing the user from causing the connector 21 to exert too much pressure on the first baffle 111 due to misuse by the user, causing the first baffle 111 to damage. And the reinforcing rib 112 is arranged on the side of the first baffle plate 111 away from the connecting head 21, so as to prevent the connecting head 21 from being easily loosened or shaken due to the contact between the reinforcing rib 112 and the connecting head 21 The problem. Furthermore, the loosening or shaking of the guide rod assembly 2 relative to the handle assembly 1 is avoided, and medical hazards caused by the shaking of the guide rod assembly 2 are avoided.

In a specific embodiment of the present invention, the number of the reinforcing ribs 112 is three, which are arranged at intervals on the side of the first baffle plate 111 away from the connecting head 21 . In other specific embodiments of the present invention, the number of the reinforcing ribs can be adaptively set according to the required strength of the structure, specifically, the number of the reinforcing ribs 112 can also be 1, 2, 4 and so on.

As a modified example, the reinforcing rib 112 can also be arranged on the side of the first baffle plate 111 close to the connecting head 21, the number of the reinforcing rib 112 is at least two, at least two of the reinforcing ribs The ribs 112 are respectively arranged on two sides of the end of the connecting head 21 in contact with the first baffle plate 111 . The reinforcing ribs 112 can not only reinforce the first baffle plate 111 , but also limit the connecting head 21 to further prevent the connecting head 21 from shaking.

2 and 3, the fixed handle 11 is further provided with a second baffle 113 and a third baffle 114, the first baffle 111, the second baffle 113, the third baffle The plates 114 are arranged at intervals, and the connecting head 21 passes through the third baffle 114 , the second baffle 113 in turn, and finally abuts against the first baffle 111 . The connecting head 21 is provided with a first locking structure 211, and the first locking structure 211 is located between the first baffle 111 and the second baffle 113, when the connecting head 21 and When the first blocking plate 111 abuts, the first locking structure 211 abuts against the second blocking plate 113 .

In a specific embodiment of the present invention, the first retaining structure 211 is a spring structure, and when the connecting head 21 is mated with the fixed handle 11, the connecting head 21 faces the first baffle plate 111 At this time, the first locking structure 211 will be pressed by the second baffle plate 113 or the third baffle plate 114, so that the connecting head 21 can move toward the first baffle plate smoothly. direction movement of the plate 111. When the connecting head 21 is against the first baffle 111, the first locking structure 211 is not pressed by the second baffle 113, and the first locking structure 211 is opposite to the The outer surface of the connecting head 21 protrudes, and then resists the second blocking plate 113 . At this time, the movement of the connecting head 21 toward the first baffle 111 will be blocked by the first baffle 111 , and the movement of the connecting head 21 toward the second baffle 113 will be blocked by the first baffle 111 . The blocking of the second baffle plate 113 restricts the movement of the connecting head 21 in the axial direction, and realizes the cooperation between the connecting head 21 and the fixed handle 11 .

A second locking structure 115 is disposed on the second baffle 113 , and the structure of the second locking structure 115 is similar to that of the reinforcing rib 112 . When the first clamping structure 211 abuts against the second baffle 113 , the second clamping structure 115 abuts against the first clamping structure 211 and the second baffle 113 On both sides of one end, and the second locking structure 115 is a split structure, that is, part of its structure is located on one side of the first locking structure 211, and the rest of the structure is located on the other side of the first locking structure 211. side.

The first clamping structure 211 resists the second baffle 113 to limit the axial movement of the connector 21 , and the second clamping structure 115 resists the first clamping structure 211 to approach The two sides of one end of the second baffle 113 can restrict the circumferential rotation of the connecting head 21 , thereby avoiding medical hazards caused by the rotation of the guide rod assembly 2 during use.

In other specific embodiments of the present invention, the first locking structure 211 may also be a spring ball or other elastic structure. The second locking structure 115 can also be integrally formed with the third baffle 114 .

Please refer to Fig. 3 and Fig. 4, in order to further limit the circumferential rotation of the connecting head 21, the third baffle plate 114 is provided with a locking groove 116, and the position of the connecting head 21 corresponds to the locking groove 116 A third locking structure 212 is provided, and when the connecting head 21 abuts against the first baffle plate 111 , the locking groove 116 cooperates with the third locking structure 212 .

It can be understood that the third locking structure 212 is a protruding structure that protrudes relative to the outer surface of the connector 21, and the locking slot 116 is engaged with the third locking structure 212, thereby limiting the The circumferential rotation of the connecting head 21 is described.

As some modified embodiments, the locking slot 116 can be replaced by a magnetic attraction structure, and the third locking structure 212 is correspondingly set as a magnetic attraction structure, and the locking slot 116 and the third locking structure 212 The magnetic fit can limit the axial and circumferential movement of the connecting head 21 at the same time.

Please refer to Fig. 1, Fig. 4-Fig. 6, the guide rod assembly 2 includes a slider 23, the slider 23 is arranged in the guide rod main body 22, and the slider 23 can be opposite to the guide rod main body 22 slides. The proximal end of the sheath tube 3 is connected to the slider 23 , and the movement of the slider 23 will drive the movement of the sheath tube 3 . The guide rod main body 22 is provided with a slide groove 221 , the slider 23 is provided with a clamping portion 231 , and the inner surface of the movable handle 12 is provided with a clamping groove 121 . The engaging portion 231 passes through the slide slot 221 and cooperates with the engaging slot 121 , so that the sliding block 23 cooperates with the movable handle 12 .

The movable handle 12 cooperates with the slider 23 to realize the sliding of the movable handle 12 on the guide rod assembly 2 . At the same time, through the slider 23, when the movable handle 12 is moved, the sheath tube 3 can be driven to move at the same time. In a specific embodiment of the present invention, the locking portion 231 is a protruding structure, which is correspondingly locked in the locking groove 121 . In other specific embodiments of the present invention, the engaging portion 231 may also be configured as a threaded structure, and the engaging portion 231 is threadedly connected to the engaging groove 121 . Alternatively, both the clamping portion 231 and the clamping groove 121 are configured as magnetic components, so that the clamping portion 231 and the clamping groove 121 are magnetically coupled.

In a specific embodiment of the present invention, the guide rod body 22 is a threaded screw on the outer surface, and the movable handle 12 can slide on the guide rod body 22 or rotate along the thread. When the movable handle 12 needs to be moved for a long distance, the movable handle can be directly slid, and when the distance of the movable handle 12 needs to be fine-tuned, the movable handle 12 can be rotated along the thread, and then the movable handle 12 can be finely adjusted. s position. The transporter 100 needs to withstand a relatively large release force when transporting medical instruments, so the user also needs a relatively large force when rotating the movable handle 12 . Before using the conveyor 100, the initial state of the conveyor 100 is that the movable handle 12 is arranged close to the fixed handle 11. When in use, a large force is required to rotate the movable handle 12. Even if the movable handle 12 is rotated in the wrong direction to move in the direction of the fixed handle 11, it is difficult for the user to distinguish that the movable handle 12 is in the wrong direction. Rotate the movable handle 12 in the wrong direction, and then use a large force to rotate the movable handle 12 in the wrong direction, which will cause the connecting head 21 to continuously squeeze the first baffle plate 111, thereby causing the The first baffle 111 is damaged. The reinforcing ribs 112 can strengthen the first baffle 111 , so as to avoid damage to the first baffle 111 due to the above reasons. At the same time, when the guide rod body 22 is a screw with threads provided on its outer surface, the second locking structure 115 and the third locking structure 212 can further prevent the damage of the first baffle plate 111 . Without the second locking structure 115 and the third locking structure 212, when the movable handle 12 is rotated, the guide rod body 22 can spirally advance towards the first baffle plate 111, which will further Squeeze the first baffle 111 . The second locking structure 115 and the third locking structure 212 are provided to limit the rotation of the guide rod body 22 and prevent the guide rod body 22 from moving toward the first baffle plate 111 and squeezing the Describe the first baffle 111. In other specific embodiments of the present invention, the guide rod body 22 may also be a smooth rod body.

Further, during the transport of the transporter 100 , the bumpy road may cause the movable handle 12 to slide to a certain extent, and the movable handle 12 to slide to a certain extent may cause the stent in the sheath tube 3 to be released in advance. Therefore, a certain number of small protrusions (not shown) are set on the guide rod main body 22, and the protrusions can play a certain position-limiting effect on the movable handle 12, so as to prevent the movable handle 12 from being caused by bumps in the road. slide. At the same time, the protrusion is only arranged on the correct path of the movable handle 12 . When in use, if the user moves the movable handle 12 in the wrong direction, there is no need to overcome the resistance movement brought by the protrusion; if the user moves the movable handle 12 in the correct direction, it needs to overcome The resistance movement brought by the protrusion can remind the user whether the movable handle 12 is moving in the correct direction. Still further, a plurality of the protrusions are arranged at intervals, and when the movable handle 12 touches the protrusions, the user can be reminded of the moving distance of the movable handle 12 .

When using the conveyor 100 , it is necessary to wear gloves for subsequent operations, so when sliding the movable handle 12 , there is a risk that the gloves will be involved in the chute 221 . At the same time, when the conveyor 100 is used, most of the cases are on a hospital bed, and the sheets on the hospital bed may be involved in the chute 221 , thus causing inconvenience in use. Therefore, in a specific embodiment of the present invention, a seal 24 is provided inside the guide rod assembly 2 , and first fixing members 241 are provided at both ends of the seal 24 , and the inner surface of the guide rod main body 22 corresponds to the chute 221 The positions of the two ends are provided with second fixing pieces 222, and the first fixing pieces 241 at both ends of the sealing piece 24 cooperate with the second fixing pieces 222 at the two ends of the chute 221 respectively, so that the sealing pieces 24 is fixed on the position corresponding to the slide groove 221 on the inner surface of the guide rod main body 22 . A part of the sliding block 23 is located above the sealing member 24 and exposed outside the guide rod main body 22 . Specifically, the sealing member 24 is provided with a slit 242 along the length direction of the sealing member 24, the engaging portion 231 sequentially passes through the slit 242, and the chute 221 is exposed to the main body of the guide rod. 22 , the engaging portion 231 can slide along the slit 242 .

It can be understood that, in a specific embodiment of the present invention, the sealing member 24 is a stretchable elastic piece, such as medical silicone. The first fixing part 241 is a spring ball, and the second fixing part 222 is a groove structure. The spring bead is clamped in the groove to achieve the effect of fixing the sealing member 24 . When the clamping part 231 moves on the slit 242, there is only a certain gap between the slit 242 and the clamping part 231 at the position of mutual contact, for the clamping part 231 to pass through. , there is no gap in the remaining positions because the sealing member 24 is in a tight stretchable state. The sealing member 24 can block the chute 221, preventing gloves or bed sheets from being caught in the chute 221.

In other specific embodiments of the present invention, the sealing member 24 can also be arranged at a position corresponding to the slide groove 221 on the outer surface of the guide rod body 22 . The engaging portion 231 sequentially passes through the chute 221 , and the slit 242 is exposed outside the guide rod main body 22 . The first fixing part 241 can be arranged at the middle part or the end part of the sealing part, and can be adaptively arranged according to the actual situation. The second fixing part 222 is adaptively arranged corresponding to the position of the first fixing part 241 . The cooperation between the sealing member 24 and the inner surface of the guide rod main body 22 can also be realized by means of dispensing glue, screw connection and the like. The first fixing part 241 can be a groove structure, and the second fixing part 222 can be a protruding structure such as a spring bead. on the rod body 22.

Please refer to Fig. 7, since the movable handle 12 needs to slide on the guide rod main body 22, there must be a gap between the movable handle 12 and the guide rod main body 22, and there is a certain probability that gloves or bed sheets will be into this gap. Because the gap is too small, it is difficult to clean out gloves or bed sheets after being caught in the gap, so a storage groove 122 is provided on the side of the movable handle 12 away from the fixed handle 11, and the storage groove 122 faces the proximal end. An opening 123 is opened on one side. When the movable handle 12 slides, even if the gloves or the bed sheet are clamped into the movable handle 12, they will first pass through the opening 123 and be stored in the storage groove 122. At this time, only a slight pull of the gloves or Sheets, gloves or sheets can be taken out from the storage slot 122, further avoiding the inconvenience caused by gloves or sheets being caught in the gap.

In a specific embodiment of the present invention, the proximal end of the receiving groove 122 is provided with an opening 123 near the side of the guide rod main body 22, that is, the proximal end of the receiving groove 122 is away from the side of the guide rod main body 22 (without A baffle 124 is formed on the side where the opening 123 is opened, and the baffle 124 can resist the user's hand, reducing the probability of gloves being caught in the movable handle 12 . In other specific embodiments of the present invention, the proximal end of the receiving groove 122 is provided with an opening 123 as a whole, as shown in FIG. 8 .

Please refer to FIG. 9 , the second embodiment of the present invention provides a conveyor 100, the difference between the conveyor 100 of the second embodiment and the conveyor 100 of the first embodiment is that the distal end of the sealing member 24 is connected to the The clamping portion 231 is connected, and the proximal end of the sealing member 24 is fixed on the inner surface of the proximal end of the guide rod main body 22 . Specifically, one end of the sealing member 24 is a collar structure 243 , and the other end is provided with the first fixing member 241 matched with the second fixing member 222 . The sealing member 24 is in a stretched state. When the slider 23 is at the position closest to the fixed handle 11 , the collar structure 243 of the sealing member 24 is sleeved on the engaging portion 231 . The first fixing part 241 and the second fixing part 222 at one end. Since the sealing member 24 is in a stretched state, the sealing member 24 will provide a certain force to drive the engaging portion 231 to slide toward the proximal end, and then drive the movable handle 12 to slide. When the slider 23 slides, the sealing member 24 provides a certain force to drive and follow the movement of the slider 23, and the proximal end of the sealing member 24 is fixed on the inner surface of the proximal end of the guide rod main body 22, The sealing member 24 always blocks the part of the slide groove 221 that the handle assembly 12 does not pass through. While making it easier for the user to slide the movable handle 12, it can also prevent gloves or sheets from being caught in the gap, thereby improving user experience. However, it should be noted that when the user does not slide the movable handle 12, the stretched seal 24 cannot drive the movable handle 12 to slide by its own force, and the movable handle 12 remains in a static state at this time.

Further, the sealing member 24 of sufficient length can be provided and connected to the slider 23 , and the sealing member 24 follows the movement of the slider 23 . When the user holds the movable handle 12 to slide, the slider 23 moves and drives the sealing member 24 to move. Since the length of the sealing member 24 is sufficient, the sliding groove 221 can be blocked by the sealing member 24 moving to any position, thereby preventing gloves or sheets from being caught in the gap.

As some modified embodiments, the collar structure 243 can be replaced with a snap-fit structure or a magnetic attraction structure, and the distal end of the sealing member 24 is matched with the slider 23 through a snap-fit or magnetic attraction connection. Or the distal end of the sealing member 24 is fixedly connected to the slider 23 by dispensing glue or welding.

Compared with the prior art, a conveyor of the present invention has the following advantages:

1. In the conveyor provided by the present invention, the sealing member can block the chute to prevent gloves or sheets from being caught in the chute. In order to prevent the gloves from being pinched and the conveyor damaged, thereby avoiding damage to the environment of the sterile operating room and threatening the life and health of the operator and the patient.

2. In the conveyor provided by the present invention, the reinforcing ribs can reinforce the first baffle, so as to prevent the user from misoperation, causing the connector to exert too much pressure on the first baffle and causing the second A bezel is damaged. Moreover, the reinforcing rib is arranged on the side of the first baffle away from the connecting head, so as to avoid the problem that the connecting head is easily loosened or shaken due to the contact between the reinforcing rib and the connecting head. Furthermore, the loosening or shaking of the guide rod assembly relative to the handle assembly is avoided, and medical hazards caused by the shaking of the guide rod assembly are avoided.

3. The movement of the connecting head in the direction of the first baffle will be blocked by the first baffle, and the movement of the connecting head in the direction of the second baffle will be blocked by the second baffle blocking, so that the movement of the connecting head in the axial direction is restricted to fix the connecting head, and also realize the cooperation between the connecting head and the fixed handle.

4. The second clamping structure resists the two sides of the first clamping structure close to the end of the second baffle plate, which can limit the circumferential rotation of the connecting head, thereby preventing the guide rod assembly from Medical hazards caused by rotation during use.

5. A locking slot is provided on the third baffle, and a third locking structure is provided at the position of the connector corresponding to the locking slot. When the connector is in contact with the first baffle , the locking groove cooperates with the third locking structure to further limit the circumferential rotation of the connecting head.

6. The side of the movable handle away from the fixed handle is provided with a storage slot, and the side of the storage slot away from the fixed handle is provided with an opening. Even if the gloves or the bed sheet are clamped into the movable handle, they will first pass through the opening and be stored in the storage slot. At this time, the gloves or the bed sheet can be taken out from the storage slot by pulling the glove or the bed sheet slightly , to further avoid the inconvenience caused by gloves or sheets being caught in the gap.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements within the principles of the present invention shall be included within the protection scope of the present invention.

Claims

A conveyor for implanting medical instruments into the human body, characterized in that: the conveyor includes a guide rod assembly, the guide rod assembly is a hollow structure, and the guide rod assembly includes a guide rod body, a slider and a seal, the slider is arranged in the main body of the guide rod, and the slider can slide relative to the main body of the guide rod, a slide groove is opened on the main body of the guide rod, and the seal is arranged in the main body of the guide rod At the position where the main body of the guide rod corresponds to the chute, part of the sliding block is located above the seal and exposed outside the main body of the guide rod.
The conveyor according to claim 1, characterized in that: the sealing member is fixedly arranged on the position of the guide rod body corresponding to the chute, and the sealing member is axially opposite to the guide rod main body still.
The conveyor according to claim 2, characterized in that: the two ends of the sealing member are fixed on the inner surface of the guide rod body at positions corresponding to the two ends of the chute, and the sealing member extends along the length direction of the sealing member A slit is provided on the top, and part of the slider passes through the sealing member through the slit.
The conveyor according to claim 3, characterized in that: the two ends of the sealing member are provided with a first fixing member, and the inner surface of the guide rod main body is provided with a second fixing member at a position corresponding to the two ends of the chute, The first fixing parts at both ends of the sealing part are matched with the second fixing parts at both ends of the sliding groove respectively.
The conveyor according to claim 3, characterized in that: the slider is provided with a clamping part, the clamping part passes through the slit in turn, and the chute is exposed outside the main body of the guide rod , the clamping portion slides along the chute and the slit to drive the sliding block to slide.
The conveyor according to claim 1, characterized in that: part of the sealing element is connected to the slider, part of the sealing element is fixedly connected to the main body of the guide rod, and the sealing element is connected to the slider The part moves with the slider relative to the main body of the guide rod.
The conveyor according to claim 6, wherein the distal end of the sealing element is connected to the slider, and the proximal end of the sealing element is fixed on the inner surface of the proximal end of the main body of the guide rod.
The conveyor according to claim 7, characterized in that: the slider is provided with a clamping part, the distal end of the sealing member is provided with a collar structure, and the proximal end of the sealing member is provided with a first fixing member, The inner surface of the main body of the guide rod is provided with a second fixing member at a position corresponding to the proximal end of the chute, the collar structure is sleeved on the engaging portion, the first fixing member and the second fixing member Fittings fit.
The conveyor according to claim 1, characterized in that: the conveyor also includes a handle assembly, the handle assembly includes a fixed handle and a movable handle, the fixed handle is connected to the distal end of the guide rod body, the The movable handle is sheathed on the main body of the guide rod and is located at the proximal end of the fixed handle, and the movable handle can move relative to the main body of the guide rod.
The conveyor according to claim 9, characterized in that: the inner wall of the movable handle is provided with a snap-in groove, part of the slider passes through the sealing member in turn, and the chute is exposed to the main body of the guide rod and cooperate with the clamping groove, the movement of the movable handle drives part of the slider to move along the chute and the sealing member, and then drives the slider to move.
The conveyor according to claim 9, wherein the guide rod assembly further comprises a connector, the connector is connected to the distal end of the guide rod body, and the connector is accommodated in the fixed handle , the fixed handle is provided with a first baffle and a reinforcing rib, one end of the connecting head is against the first baffle, and the reinforcing rib is arranged on the side of the first baffle away from the connecting head .
The conveyor according to claim 11, wherein a second baffle is arranged inside the fixed handle, the first baffle and the second baffle are arranged at intervals, and the distal end of the connecting head passes through pass through the second baffle and finally abut against the first baffle.
The conveyor according to claim 12, characterized in that: the connecting head is provided with a first locking structure, and the first locking structure is located between the first baffle plate and the second baffle plate During this period, when the connecting head is abutting against the first baffle, the first locking structure is abutting against the second baffle.
The conveyor according to claim 13, wherein a second locking structure is provided on the second baffle, and when the first locking structure is opposed to the second baffle, the The second locking structure limits the rotation of the connecting head.
The conveyor according to claim 12, wherein a third baffle is arranged inside the fixed handle, the first baffle, the second baffle, and the third baffle are arranged at intervals, and the connecting The distal end of the head sequentially passes through the third baffle, the second baffle and finally abuts against the first baffle.
The conveyor according to claim 15, characterized in that: a locking slot is provided on the third baffle, and a third locking structure is provided at the position of the connector corresponding to the locking slot, when the When the connecting head abuts against the first baffle plate, the locking groove cooperates with the third locking structure.
The delivery device according to claim 11, characterized in that: said delivery device further comprises a sheath tube, said sheath tube enters from the distal end of said fixed handle, and passes through said first baffle, said connection The head enters the main body of the guide rod, and the proximal end of the sheath is connected with the slider in the main body of the guide rod, and the slider slides to drive the movement of the sheath.
The conveyor according to claim 9, characterized in that: the proximal end of the movable handle is provided with a storage groove, and the opening of the storage groove faces the proximal end of the conveyor.