CN217793536U - Magnetic control urination system and magnetic control catheter thereof - Google Patents

Abstract

The utility model relates to a magnetic control urination system and magnetic control pipe thereof, magnetic control pipe includes pipe main part and magnetic control valve, the magnetic control valve includes sealing member and first magnetic bead, the sealing member is connected with the near-end sealing of pipe main part, the sealing member has fluid passage, first magnetic bead sets up in one side of sealing member or sets up the inside at the sealing member, first magnetic bead is used for the shutoff under the magnetic field effect or switches on fluid passage, the sealing member is equipped with spacing portion, spacing portion is configured to the distal end that the first magnetic bead of restriction follow sealing member and shifts out. The utility model discloses a magnetic control urination system and magnetic control pipe thereof, because first magnetic bead can not shift out from the distal end of sealing member under the restriction of spacing portion to also can not follow the distal end that the pipe main part entered into the pipe main part, consequently, when the internal diameter of configuration pipe main part, just do not have the concern that first magnetic bead got into the distal end of pipe main part, pipe main part selectable is the great internal diameter relatively then, in order to improve pipe main part flow, thereby improve urination rate, shorten the urination time.

Description

Magnetic control urination system and magnetic control catheter thereof

Technical Field

The utility model relates to the technical field of medical equipment, especially relate to a magnetic control urination system and magnetic control pipe thereof.

Background

A urinary catheter is an instrument inserted into the bladder from the urethra to drain urine, and is widely used for patients with urinary retention or bladder outlet obstruction, urinary incontinence patients, and the like.

In the related art, most catheters are Foley catheters which are partially implanted in a body and partially exposed out of the body and are matched with urine bags for use. However, such catheters have the following problems:

(1) the catheter is exposed out of the body, so that urinary tract infection is easily caused;

(2) the normal work and social life of the patient are limited by carrying the urine bag, and many activities cannot be carried out.

For this reason, an indwelling catheter has been proposed in the art, however, the indwelling catheter is used as an implant which needs to be implanted to a desired position under the delivery of a delivery system, and after implantation, the implanted portion needs to be separated from the delivery system. In the related art, the built-in catheter adopts a controllable catheter magnetic valve to control the opening and closing, however, in order to prevent the magnetic beads from moving into the catheter main body of the implant, the inner diameter of the catheter main body of the implant is required to be smaller than the diameter of the magnetic beads, which results in a small flow rate of the catheter main body and a long urination time.

SUMMERY OF THE UTILITY MODEL

Therefore, the magnetic control urination system and the magnetic control catheter thereof are provided to solve the problem that the inner diameter of the built-in urinary catheter is limited by the diameter of the magnetic beads, so that the flow is small, and the urination time is long.

In one aspect, the present invention provides a magnetic control catheter, comprising:

a catheter body;

the magnetic control valve comprises a sealing element and first magnetic beads, wherein the sealing element is connected with the proximal end of the catheter main body in a sealing mode, the sealing element is provided with a fluid channel communicated with the catheter main body, the first magnetic beads are arranged on one side of the sealing element or in the sealing element, the first magnetic beads are used for blocking or conducting the fluid channel under the action of a magnetic field, and the sealing element is provided with a limiting part which is configured to limit the first magnetic beads to move out of the distal end of the sealing element.

In one embodiment, the magnetic control valve comprises a second magnetic bead, the fluid channel is provided with a first blocking position and a second blocking position which are spaced from each other along the axial direction of the fluid channel, the first magnetic bead is positioned on the side of the first blocking position, which faces away from the second blocking position, and is used for blocking the first blocking position, and the second magnetic bead is positioned on the side of the second blocking position, which faces away from the first blocking position, and is used for blocking the second blocking position.

In one embodiment, the first blocking site and the second blocking site are funnel-shaped in the axial direction of the fluid channel.

In one embodiment, the magnetic valve comprises a proximal locking seat connected to the proximal end of the sealing element, and the proximal locking seat is provided with a limiting structure for limiting the second magnetic bead from being removed from the proximal end of the catheter main body.

In one embodiment, the sealing element and the proximal locking seat are respectively provided with a first clamping protrusion and a second clamping protrusion on the peripheral sides, the inner wall of the catheter main body is provided with a first clamping groove and a second clamping groove, the first clamping groove is matched with the first clamping protrusion, and the second clamping groove is matched with the second clamping protrusion.

On the other hand, the utility model provides a magnetic control urination system, including conveyor and foretell magnetic control pipe, conveyor is used for carrying and releases the magnetic control pipe.

In one embodiment, a distal lock seat is connected to the distal end of the catheter body, and the delivery device includes a lock sleeve movably disposed through the delivery tube, a delivery tube having a distal end that is in a clearance fit with the distal lock seat, and a lock wire configured to apply a proximally directed traction force to the distal lock seat.

In one embodiment, the delivery device includes a handle connected to the proximal end of the delivery tube and configured to operate a locking sleeve to move axially relative to the delivery tube, the locking wire having both ends passing through the locking sleeve and being secured to the handle, the handle being configured to release one end of the locking wire.

In one embodiment, the conveying device comprises a connecting block, the proximal end of the connecting block is connected with the conveying pipe, and the distal end of the connecting block is detachably connected with the proximal end of the magnetron guide pipe along the axial direction of the conveying pipe.

In one embodiment, the distal end of the connecting block is formed with an insertion part, the proximal locking seat of the magnetic control valve is provided with an insertion hole, and the insertion part is matched with the insertion hole.

In one embodiment, the delivery device includes a lasso configured to apply a proximally directed pulling force to a proximal lock seat of the magnetically controlled valve such that the proximal end of the magnetically controlled catheter remains relatively fixed to the distal end of the delivery tube, and the magnetically controlled catheter is axially separable from the distal end of the delivery tube when the lasso releases the pulling force to the proximal lock seat.

In one embodiment, the delivery tube is provided with a through hole, the locking sleeve is arranged through the proximal locking seat, the loop rope passes through the through hole on the delivery tube and is connected into a loop, the loop is configured to loop the locking sleeve and limit the proximal locking seat at the distal end of the connecting block, and when the locking sleeve moves towards the proximal end to the distal position of the delivery tube, the loop is peeled off from the distal end of the locking sleeve, so that the loop rope releases the traction of the proximal locking seat.

In one embodiment, the distal end of the connecting block is provided with a matching part, and the matching part is in interference fit with the catheter main body.

The magnetic control urination system comprises a catheter main body and a magnetic control valve, wherein the magnetic control valve comprises a sealing element and a first magnetic bead, the sealing element is connected with the near end of the catheter main body in a sealing mode and is provided with a fluid channel communicated with the catheter main body, the first magnetic bead is arranged on one side of the sealing element or in the sealing element and is used for plugging or conducting the fluid channel under the action of a magnetic field, a limiting part is formed at the far end of the sealing element and limits the first magnetic bead to move out of the far end of the sealing element, so that the first magnetic bead cannot enter the far end of the catheter main body along the catheter main body.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, drawings of other embodiments can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of a magnetic control urination system according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a magnetic catheter of a magnetic control urination system according to an embodiment;

FIG. 3 is a schematic cross-sectional view of one embodiment of a magnetically controlled urination system;

FIG. 4 is a partially enlarged view of the structure of part A in FIG. 3;

FIG. 5 is a schematic cross-sectional view of a seal in an embodiment of a magnetron;

FIG. 6 is a schematic structural view of the distal portion structure of one embodiment of a magnetically controlled urination system;

FIG. 7 is a schematic diagram of a system for magnetically controlled urination delivery device according to one embodiment;

FIG. 8 is a partially enlarged view of the structure of portion B in FIG. 6;

fig. 9 is a schematic perspective view of a distal locking seat in an embodiment of a magnetic urination system.

Reference numerals:

10. a magnetically controlled catheter; 11. a catheter body; 11a, a first card slot; 11b, a second card slot; 111. a proximal end of the catheter body; 112. a distal end of the catheter body; 12. a magnetic control valve; 121. a seal member; 121a, a fluid channel; 121b, an inverted cone structure; 121c, a flow-limiting ring; 121d, a first snap projection; 122. a first magnetic bead; 123. a second magnetic bead; 124. a first plugging position; 125. a second plugging position; 126. a proximal lock mount; 126a, a limiting structure; 126b, a second snap projection; 126c, a plug hole; 13. a distal locking seat; 13a, a jack; 13b, a cross beam; 20. a conveying device; 20a, luer male; 20b, a rear shell; 21. a locking sleeve; 22. a delivery pipe; 23. locking wires; 24. a handle; 25. a fixing member; 26. connecting blocks; 26a, a plug part; 26b, a fitting portion; 27. sleeving a rope; 28. a locking cap; 29. and a male plug.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for illustrative purposes only and do not denote a single embodiment.

It is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

In an embodiment of the present invention, the proximal end is an end of the medical device close to an operator (e.g., a doctor), and the distal end is an end of the medical device away from the operator.

Referring to fig. 1, a magnetic control urination system according to an embodiment of the present invention includes a magnetic control catheter 10 and a delivery device 20, wherein the magnetic control catheter 10 is used as an implant and can be delivered to an implantation position and released by the delivery device 20.

As shown in fig. 2, the magnetron catheter 10 includes a catheter main body 11 and a magnetron valve 12. The magnetron valve 12 is disposed within the catheter body 11, the magnetron valve 12 being located at the proximal end 111 of the catheter body 11.

After the magnetron catheter 10 is implanted in the body, during the drainage (e.g., urine) process, the liquid flows from the distal end 112 of the catheter main body 11 into the catheter main body 11, and flows through the catheter main body 11 into the proximal magnetron valve 12. When the magnetically controlled valve 12 is open, liquid flows out of the proximal end 111 of the catheter body 11.

As shown in fig. 3 and 4, the magnetic control valve 12 includes a sealing member 121 and a first magnetic bead 122. The seal 121 is sealingly connected to the proximal end 111 of the catheter body 11, and the seal 121 has a fluid passage 121a communicating with the catheter body 11. In the magnetic control valve 12, the conduction or the shutdown of the catheter main body 11 is realized by controlling the plugging or the conduction of the fluid channel 121a by the first magnetic beads 122.

Specifically, the first magnetic bead 122 is disposed on one side of the sealing member 121 or inside the sealing member 121, and is used for blocking the fluid channel 121a under the action of the magnetic field, so that the magnetic control valve 12 is in a closed state, and no liquid will leak out from the magnetic control conduit 10 equipped with the magnetic control valve 12. Accordingly, when the first magnetic bead 122 unblocks the fluid channel 121a, so that the magnetic control valve 12 is in the open state, the magnetic control catheter 10 implanted in the body can satisfy the liquid drainage requirement.

Further, as shown in fig. 5, the distal end of the sealing member 121 is formed with a reverse taper structure 121b, and the reverse taper structure 121b can prevent the first magnetic beads 122 from moving out of the distal end of the sealing member 121, so as not to enter the distal end 112 of the catheter main body 11 along the catheter main body 11, so that there is no concern that the first magnetic beads 122 enter the distal end 112 of the catheter main body 11 when the inner diameter of the catheter main body 11 is configured, i.e. the inner diameter of the catheter main body 11 can be disregarded for the diameter of the first magnetic beads 122, and then the catheter main body 11 can be selected to have a relatively larger inner diameter, for example, the inner diameter of the catheter main body 11 is larger than the diameter of the first magnetic beads 122, so as to increase the flow rate of the catheter main body 11, thereby increasing the urination rate and shortening the urination time. Wherein the cross section of the inverted cone structure 121b gradually increases from the proximal end to the distal end.

In some embodiments, the structure for limiting the removal of the first magnetic beads 122 from the distal end of the seal 121 is not limited to the inverted cone structure 121b. Specifically, the sealing member 121 is provided with a stopper including, but not limited to, the aforementioned inverted cone structure 121b, and the stopper is configured to limit the first magnetic beads 122 from being removed from the distal end of the sealing member 121. Because the sealing member 121 is connected to the proximal end 111 of the catheter main body 11 in a sealing manner, under the action of the limiting portion, the first magnetic beads 122 will not enter the human body along the catheter main body 11 even under the condition that the first magnetic beads 122 are not moved out from the distal end of the sealing member 121, that is, when the inner diameter of the catheter main body 11 is set, the aperture of the first magnetic beads 122 is not needed to be considered, and the inner diameter of the catheter main body 11 can be made large enough to improve the urination efficiency.

The limiting portion may be a filter screen, so that the first magnetic bead 122 may be limited, and the circulation effect of the magnetic control valve 12 when the catheter main body 121 is conducted may not be obstructed. In some embodiments, the limiting portion may also be a bracket having a hole, and the diameter of the hole is smaller than the diameter of the first magnetic bead 122, so as to limit the first magnetic bead 122, and the hole of the bracket can also satisfy the liquid flowing requirement when the magnetic control valve 12 conducts the catheter main body 121. The structures of the limiting parts are not enumerated one by one here.

It should be noted that the sealing member 121 may be disposed outside the catheter body 11 to provide a sealing effect at the end face of the proximal end 111 of the catheter body 11. In some embodiments, the sealing member 121 may be disposed inside the catheter main body 11, specifically, the sealing member 121 is connected to the inner wall of the catheter main body 11 in a sealing manner, and in this case, the magnetic control valve 12 may be considered to be disposed entirely inside the lumen of the catheter main body 11. In this embodiment, the portion of the catheter body 11 for disposing the magnetic control valve 12 may be configured to have a larger diameter than the rest of the catheter body 11, so that the magnetic control valve 12 is accommodated while the rest of the catheter body 11 maintains a sufficiently large inner diameter to increase the flow rate of the catheter body 11, thereby increasing the urination rate.

In some embodiments, the fluid channel 121a of the sealing member 121 is provided with 2 or more than 2 plugging positions, and corresponding magnetic beads are correspondingly disposed, so that the magnetic beads can plug the corresponding plugging positions to improve the sealing effect of the sealing member 121, thereby effectively preventing liquid leakage.

For convenience of understanding, referring to fig. 4, the structure of the magnetic valve 12 will be further described by taking the example that the magnetic valve 12 includes the first magnetic bead 122 and the second magnetic bead 123.

Specifically, in the embodiment where the magnetic control valve 12 includes the first magnetic bead 122 and the second magnetic bead 123, the fluid channel 121a is provided with a first blocking position 124 and a second blocking position 125 spaced apart from each other along the axial direction thereof, and the axial direction of the fluid channel 121a refers to the flowing direction of the liquid flowing through the fluid channel 121a. Thus, in this embodiment, the first blocking site 124 and the second blocking site 125 are provided at intervals on the path of the flow channel 121a for the liquid to flow through, and either one of the first blocking site 124 and the second blocking site 125 is blocked, so that the liquid is restricted from passing through the flow channel 121a. As shown in fig. 4, the first magnetic bead 122 is located at a side of the first blocking site 124 facing away from the second blocking site 125 and is used for blocking the first blocking site 124. The second magnetic bead 123 is located on a side of the second plugging site 125 facing away from the first plugging site 124 and is used for plugging the second plugging site 125. In this embodiment, the first blocking position 124 and the second blocking position 125 are blocked by the first magnetic bead 122 and the second magnetic bead 123, respectively, so that the fluid channel 121a is closed, and then the magnetic control valve 12 is in a closed state.

It should be noted that the first magnetic bead 122 and the second magnetic bead 123 move relative to the sealing member 121 under the action of the magnetic field to open the magnetic valve 12. Specifically, when a magnetic field is applied to the outside, the first magnetic bead 122 and the second magnetic bead 123 of the magnetic valve 12 are simultaneously biased to the valve-open position, and at this time, the first magnetic bead 122 leaves the first blocking position 124, and the second magnetic bead 123 leaves the second blocking position 125, so that the fluid channel 121a can be adapted to the liquid circulation requirement. When the external magnetic field is removed, the first magnetic bead 122 and the second magnetic bead 123 attract each other, and both the first magnetic bead 122 and the second magnetic bead 123 abut against the sealing member 121, specifically, the first magnetic bead 122 abuts against the first blocking position 124, and the second magnetic bead 123 abuts against the second blocking position 125, so that the fluid channel 121a is closed, and at this time, the magnetic control valve 12 is in a closed state. Because the two sides of the first blocking position 124 and the second blocking position 125 of the sealing member 121 are respectively blocked by the first magnetic bead 122 and the second magnetic bead 123, the overall sealing effect of the fluid channel 121a is better, and the leakage probability is reduced.

It should be noted that, in this embodiment, because when removing external magnetic field, first magnetic bead 122 and second magnetic bead 123 attract each other, first magnetic bead 122 and second magnetic bead 123 all can offset with sealing member 121 to seal first shutoff position 124 and second shutoff position 125 respectively, thereby need not the external magnetic field effect of continuously applying, adopt this magnetic control pipe 10 can keep in normal closed condition, only need just exert the magnetic field effect and open magnetic control valve 12 in the time of urinating, consequently, adopt the utility model discloses embodiment's magnetic control pipe 10 is favorable to practicing thrift the magnetic energy, reduces the whole consumption of magnetic control pipe 10 promptly, is favorable to prolonging the duration in the use.

Referring to fig. 5, in some embodiments, a part of the structure of the fluid passage 121a is formed by the restrictor ring 121c, and specifically, the central hole of the restrictor ring 121c is a part of the flow path of the fluid passage 121a. In this embodiment, the first blocking site 124 and the second blocking site 125 may be formed on the distal end surface and the proximal end surface of the restrictor ring 121c, respectively. Therefore, the central hole of the restrictor ring 121c can be sealed to achieve the effect of plugging the fluid channel 121a no matter the first magnetic bead 122 plugs the first plugging site 124 or the second magnetic bead 123 plugs the second plugging site 125.

It should be noted that 2 or more than 2 flow restricting rings 121c are disposed in the fluid passage 121a, and the first blocking site 124 and the second blocking site 125 may also be formed on the proximal end surface or the distal end surface of different flow restricting rings 121 c.

In some embodiments, the first blocking site 124 and the second blocking site 125 are funnel-shaped along the axial direction of the fluid channel 121a, specifically, the first blocking site 124 is in a direction away from the first magnetic bead 122, the diameter of the fluid channel 121a at a position corresponding to the first blocking site 124 is gradually reduced, and the diameter of the second blocking site 125 is in a direction away from the second magnetic bead 123, the diameter of the fluid channel 121a at a position corresponding to the second blocking site 125 is gradually reduced. The arrangement is such that the first blocking site 124 and the second blocking site 125 can guide the first magnetic bead 122 and the second magnetic bead 123, respectively.

Specifically, when the valve needs to be closed, the funnel-shaped structure can guide the first magnetic bead 122 and the second magnetic bead 123 to roll to the position for plugging the fluid channel 121a, that is, the first magnetic bead 122 plugs the first plugging location 124, and the second magnetic bead 123 plugs the second plugging location 125, so as to ensure that the magnetic control valve 12 can be successfully closed each time.

Referring again to fig. 4, the magnetic control valve 12 includes a proximal locking seat 126, and the proximal locking seat 126 is made of a hard material, for example, the material of the proximal locking seat 126 is a thermosetting plastic, or a metal material such as aluminum, copper, or stainless steel.

The proximal lock seat 126 is provided with a limiting structure 126a, and the limiting structure 126a is used for limiting the second magnetic bead 123 from moving out of the proximal end 111 of the catheter main body 11.

In some embodiments, the proximal lock seat 126 is coupled to the proximal end of the seal 121, e.g., the proximal lock seat 126 is threaded or snap-fit to the seal 121. The limiting structure 126a is located at the proximal end of the second magnetic bead 123, so that the second magnetic bead 123 is limited between the second plugging location 125 and the limiting structure 126a, and the second magnetic bead 123 is prevented from falling out of the magnetic control valve 12, so as to reduce the failure probability of plugging the second plugging location 125 by the second magnetic bead 123.

The body of the proximal lock seat 126 may be tubular, and the stop 126a may be a protrusion protruding from the inner wall of the body.

The circumference of the sealing element 121 and the proximal locking seat 126 is provided with a first clamping protrusion 121d and a second clamping protrusion 126b, respectively, the inner wall of the catheter main body 11 is provided with a first clamping groove 11a and a second clamping groove 11b, wherein the first clamping groove 11a is matched with the first clamping protrusion 121d, and the second clamping groove 11b is matched with the second clamping protrusion 126 b. In this embodiment, the first locking protrusion 121d and the second locking protrusion 126b are respectively engaged with the first locking groove 11a and the second locking groove 11b, so that the sealing member 121 and the proximal locking seat 126 are stably connected in the catheter main body 11, thereby completing the installation of the magnetic control valve 12 and preventing the magnetic control valve 12 from falling off from the catheter main body 11.

Since the proximal lock seat 126 is connected to the seal member 121, either one of the two is connected to the catheter main body 11, and the magnetic control valve 12 and the catheter main body 11 can be stably connected. That is, the first locking protrusion 121d and the second locking protrusion 126b may be respectively located on the sealing member 121 and the proximal locking seat 126, or both may be located on the sealing member 121, or both may be located on the proximal locking seat 126. The connection manner of the sealing member 121 of the magnetic control valve 12 and the proximal lock seat 126, and the connection manner of the magnetic control valve 12 and the catheter main body 11 are not limited herein. For example, in some embodiments, at least one of the seal 121 and the proximal lock seat 126 is bonded to the catheter body 11 by glue.

As shown in fig. 2 and 6, a distal locking seat 13 is connected to the distal end 112 of the catheter main body 11, and specifically, the distal locking seat 13 is located in the catheter main body 11 and fixed to the distal end 112 of the catheter main body 11.

The distal locking seat 13 has a certain connection strength with the catheter body 11 and does not separate from the catheter body 11 under the application of force. Thus, when the distal end of the magnetron catheter 10 is fixed to the delivery device 20, it is effectively ensured that no accidental separation occurs during the operation.

Referring to fig. 7 and 8, the delivery device 20 includes a locking sleeve 21, a delivery tube 22, and a locking wire 23.

A locking sleeve 21 is movably disposed through the delivery tube 22 with the distal end of the locking sleeve 21 being in clearance fit with the distal locking seat 13. In some embodiments, the distal lock seat 13 has a receptacle 13a, and the distal end of the lock sleeve 21 is received in the receptacle 13a and is removable from the receptacle 13 a.

In this embodiment, the locking wire 23 is configured to apply a proximally directed traction force to the distal locking seat 13. Specifically, as shown in connection with fig. 9, the distal lock base 13 has a cross member 13b, and the lock wire 23 is wound around the cross member 13b of the distal lock base 13. In this way, the locking wire 23 is used to apply a force to the beam 13b towards the proximal end, so that the distal locking seat 13 is stably engaged with the distal end of the locking sleeve 21, and then the magnetron catheter 10 is stably connected with the delivery device 20 by the relative fixation of the distal locking seat 13 and the catheter main body 11.

It should be noted that the delivery device 20 includes a handle 24, and that the handle 24 is attached to the proximal end of the delivery tube 22 and is configured to operate the locking sleeve 21 to move axially relative to the delivery tube 22.

In some embodiments, both ends of the locking wire 23 pass through the locking sleeve 21, both ends of the locking wire 23 pass through the proximal end of the locking sleeve 21 and are fixed to the handle 24, and the handle 24 is configured to release the fixing of one end of the locking wire 23. For example, the handle 24 is provided with a fixing member 25 such as a rotating device or a pressing device, and both ends of the locking wire 23 are fixed by the fixing member 25. When the separation is needed, the fixing piece 25 is loosened to loosen one end of the locking wire 23, the other end is still fixed on the fixing piece 25, then the fixing piece 25 is pulled towards the near end, the locking wire 23 can be pulled out, the locking of the locking wire 23 on the distal locking seat 13 is released, and then the distal end 112 of the catheter main body 11 can be separated from the locking sleeve 21, so that the purpose of releasing the magnetic control catheter 10 is achieved.

The delivery device 20 includes a connector block 26, and the proximal end of the connector block 26 is connected to the delivery tube 22. The connection manner of the proximal end of the connection block 26 and the delivery tube 22 may be a snap connection or a screw connection, which is not limited herein.

The distal end of the connection block 26 is detachably connected to the proximal end of the magnetron 10 in the axial direction of the transport tube 22. The detachable connection may be regarded as the connection block 26 and the magnetron 10 being connected under the constraint force, and the connection block 26 and the magnetron 10 being relatively separated along the axial direction under the constraint force loss.

In some embodiments, the distal end of the connection block 26 cooperates with the stop structure 126a of the proximal lock seat 126 to improve the stability of the connection between the proximal end of the magnetron 10 and the delivery device 20.

Further, the distal end of the connection block 26 is formed with an insertion portion 26a, and the proximal lock seat 126 is correspondingly formed with an insertion hole 126c matched with the insertion portion 26a, so that the matching of the insertion portion 26a and the insertion hole 126c is utilized to enhance the connection stability of the distal end of the connection block 26 and the proximal lock seat 126. The cross section of the insertion portion 26a may be a semicircle, a sector with a central angle of 30 °, 40 °, or 70 °, or other shapes, which are not limited herein.

In some embodiments, the delivery device 20 includes a pull string 27, and the pull string 27 is configured to apply a proximally-directed pulling force to the proximal locking seat 126 of the magnetron 12, such that the proximal end of the magnetron catheter 10 and the distal end of the delivery tube 22 are relatively fixed, i.e., the proximal end of the magnetron catheter 10 is axially or radially constrained to the distal end of the delivery tube 22, and thus cannot move relative to each other. Since the locking force for achieving the relative positional fixation between the magnetron 10 and the delivery pipe 22 is from the pulling of the proximal locking seat 126 of the magnetron 12 by the loop rope 27 toward the proximal end, when the pulling of the proximal locking seat 126 by the loop rope 27 is released, the magnetron 10 and the delivery pipe 22 are no longer restrained by the loop rope 27, and the magnetron 10 can be separated from the distal end of the delivery pipe 22 in the axial direction.

Specifically, the delivery tube 22 is perforated, the locking sleeve 21 is inserted into the proximal locking seat 126, and the loop rope 27 is inserted through the perforation on the delivery tube 22 and connected to form a loop. For example, the noose 27 is folded in half and then joined end to end by knotting or gluing to form a loop.

As shown in connection with fig. 4, the loop formed by the noose 27 is configured to capture the locking sleeve 21 and to restrain the proximal locking seat 126 at the distal end of the connector block 26 to secure the proximal end 111 of the catheter body 11 to the delivery device 20.

When the connection block 26 needs to be separated from the catheter main body 11, the locking sleeve 21 only needs to be moved towards the proximal end to the distal end position of the delivery tube 22, so that the loop formed by the loop rope 27 is stripped from the distal end of the locking sleeve 21, and the loop rope 27 cannot continuously loop the locking sleeve 21 and exert a traction force towards the proximal end on the proximal end locking seat 126, namely, the loop rope 27 releases the traction on the proximal end locking seat 126, at this time, because the proximal end locking seat 126 is not dragged by the loop rope 27, when the magnetron catheter 10 moves towards the distal end relative to the delivery tube 22 along the axial direction, the connection block 26 can be separated from the proximal end 111 of the catheter main body 11, so that the release of the magnetron catheter 10 is realized, and the operation is simple and reliable.

In some embodiments, the distal end of the connection block 26 is provided with a fitting portion 26b, and the proximal locking seat 126 is pulled proximally by the lasso 27, so that the catheter body 11 moves proximally with the proximal locking seat 126, and the catheter body 11 is fitted with the fitting portion 26b of the connection block 26.

Further, the fitting portion 26b is in interference fit with the catheter main body 11, so that good connection stability between the proximal end 111 of the catheter main body 11 and the delivery device 20 is ensured.

It should be noted that the interference fit between the fitting portion 26b and the catheter main body 11 may be a sleeve, specifically, the proximal end 111 of the catheter main body 11 is sleeved on the fitting portion 26b of the connection block 26. In some embodiments, the interference fit between the fitting portion 26b and the catheter main body 11 may also be a snap connection, specifically, the fitting portion 26b is a snap protrusion or a snap groove, and the catheter main body 11 is snap-fitted with the fitting portion 26b.

In some embodiments, as shown in fig. 3 and 7, the handle 24 is further provided with a locking cap 28, and after the relative positions of the locking sleeve 21 and the delivery tube 22 are adjusted, the locking cap 28 is used to lock the relative positions therebetween so as to perform an implantation operation on the magnetron sleeve. Accordingly, when it is desired to release the magnetron cannula after the implantation operation of the magnetron cannula is completed, the locking of the locking cannula 21 can be released by operating the locking cap 28 so that the locking cannula 21 can be withdrawn proximally relative to the delivery tube 22.

In some embodiments, a male plug 29 is provided within the handle 24 for sealing the tubing to prevent blood from escaping the handle 24 during the procedure. In some embodiments, the delivery device 20 may be configured with a luer male head 20a or a rear housing 20b, and the structure of the handle 24 is not described herein.

It should be noted that, in the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected or otherwise interacting with the two elements, unless expressly specified otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (13)

1. A magnetron catheter, comprising:

a catheter body;

the magnetic control valve comprises a sealing element and first magnetic beads, wherein the sealing element is connected with the proximal end of the catheter main body in a sealing mode, the sealing element is provided with a fluid channel communicated with the catheter main body, the first magnetic beads are arranged on one side of the sealing element or in the sealing element, the first magnetic beads are used for blocking or conducting the fluid channel under the action of a magnetic field, and the sealing element is provided with a limiting part which is configured to limit the first magnetic beads to move out of the distal end of the sealing element.

2. The magnetron catheter of claim 1, wherein the magnetic control valve comprises a second magnetic bead, and the fluid channel is provided with a first plugging position and a second plugging position which are spaced from each other along the axial direction of the fluid channel, the first magnetic bead is positioned on the side of the first plugging position facing away from the second plugging position and is used for plugging the first plugging position, and the second magnetic bead is positioned on the side of the second plugging position facing away from the first plugging position and is used for plugging the second plugging position.

3. The magnetron catheter of claim 2, wherein the first and second plugging locations are each funnel shaped along an axial direction of the fluid channel.

4. The magnetron catheter of claim 2, wherein the magnetron valve comprises a proximal lock seat coupled to the proximal end of the seal member, the proximal lock seat having a stop feature configured to limit removal of the second magnetic beads from the proximal end of the catheter body.

5. The magnetic control catheter according to claim 4, wherein a first locking protrusion and a second locking protrusion are respectively disposed on the sealing member and the periphery of the proximal locking seat, a first locking groove and a second locking groove are disposed on the inner wall of the catheter body, the first locking groove is adapted to the first locking protrusion, and the second locking groove is adapted to the second locking protrusion.

6. A magnetically controlled urinary drainage system comprising a delivery device for delivering and releasing said magnetically controlled catheter and a magnetically controlled catheter according to any one of claims 1 to 5.

7. The magnetically controlled urination system of claim 6, wherein the distal end of the catheter body has a distal lock seat attached thereto, the delivery device comprises a lock sleeve movably disposed through the delivery tube, a delivery tube having a distal end in clearance fit with the distal lock seat, and a lock wire configured to apply a proximally directed traction force to the distal lock seat.

8. The magnetically controlled urination system of claim 7, wherein the delivery device comprises a handle connected to the proximal end of the delivery tube and configured to operate a locking sleeve to move axially relative to the delivery tube, wherein both ends of the locking wire pass through the locking sleeve and are secured to the handle, and wherein the handle is configured to release the securing of one end of the locking wire.

9. The magnetically controlled urination system of claim 7, wherein the delivery device comprises a connecting block, a proximal end of the connecting block is connected to the delivery tube, and a distal end of the connecting block is detachably connected to the proximal end of the magnetron tube along the axial direction of the delivery tube.

10. The magnetic control urination system as claimed in claim 9, wherein the distal end of the connecting block is formed with an insertion part, the proximal locking seat of the magnetic control valve is formed with an insertion hole, and the insertion part is matched with the insertion hole.

11. The magnetically controlled urination system of claim 9 or 10, wherein the delivery device comprises a noose configured to apply a proximally directed traction force to the proximal lock seat of the magnetically controlled valve such that the proximal end of the magnetically controlled catheter remains relatively fixed with respect to the distal end of the delivery tube and the magnetically controlled catheter is axially separable from the distal end of the delivery tube when the noose releases the traction on the proximal lock seat.

12. The magnetically controlled urination system of claim 11, wherein the tube has a bore, the locking sleeve is disposed through the proximal locking seat, the snare wire is threaded through the bore in the tube and connected to a loop, the loop is configured to capture the locking sleeve and retain the proximal locking seat at the distal end of the connection block, and when the locking sleeve is moved proximally to a position distal to the tube, the loop is peeled away from the distal end of the locking sleeve such that the snare wire is free of traction on the proximal locking seat.

13. The magnetically controlled urination system of claim 11, wherein the distal end of the connection block is provided with an engagement portion that is an interference fit with the catheter body.

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