CN215739313U - Reverse puncture system capable of being accurately positioned - Google Patents

Abstract

The utility model relates to the technical field of medical instruments, in particular to a reverse puncture system capable of accurately positioning, which comprises a handle mechanism, a sheath tube and a puncture needle, wherein a needle outlet guide module is arranged in the sheath tube, a puncture needle guide rail is arranged in the needle outlet guide module, so that the puncture needle can be discharged through the puncture needle guide rail, a traction wire is connected on the needle outlet guide module and is connected with the handle mechanism, the handle mechanism drives the needle outlet guide module to move through the traction wire, and the puncture needle can be discharged through the puncture needle guide rail, the reverse puncture system can be sent to a target blood vessel from a non-target blood vessel, so that a puncture part is accurately positioned, then puncture is carried out on the skin from the blood vessel, the puncture of the target blood vessel is completed, the problem that repeated angiography confirmation is needed is solved, the operation time is reduced, the times of invasive operation are reduced, and the occurrence probability of vascular complications is reduced, simultaneously, the dosage of the contrast agent and the time of intraoperative fluoroscopy are reduced.

Description

Reverse puncture system capable of being accurately positioned

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a reverse puncture system capable of being accurately positioned.

Background

In interventional operations such as transcatheter aortic valve replacement which have high requirements on puncture of an operation access target blood vessel, because the diameter of a surgical instrument is thick (16-24F sheath), a target access blood vessel for delivering a prosthetic valve needs to be established through preoperative evaluation, such as the common right femoral artery, the center of the coronary position of the femoral artery after iliac artery bifurcation needs to be punctured accurately, existing vascular lesions of vascular plaque and interlayer need to be avoided, so that the use of a vascular suturing (closing) device can be facilitated, and serious complications such as bleeding of puncture wounds in the operation and after the operation can be avoided.

However, the patients who receive the operation are often older, the skin muscles of the body surface are loose, and the peripheral blood pressure is low due to the disease, so that the peripheral artery pulsation is often weak and dispersed, the body surface is difficult to be positioned and punctured through the artery pulsation, and the middle of the sagittal blood vessel is difficult to be punctured accurately.

In order to solve the problem, currently, a contralateral femoral artery needs to be punctured, a target blood vessel is imaged, the approximate puncture position is preliminarily determined on the body surface, then an inlet micro puncture needle is used for puncturing, selective blood vessel development is carried out through a puncture sheath matched with the micro puncture needle after puncturing, if the puncture position is determined to be in the middle of the coronary position of a target approach blood vessel, a conventional puncture sheath guide wire is exchanged, a conventional puncture blood vessel sheath is arranged, if the puncture position is not in the middle, puncturing is needed again, imaging is repeated until the puncture position is in the middle of the blood vessel, the conventional puncture sheath guide wire is exchanged, the conventional puncture blood vessel sheath is arranged again, and partial patients need to repeatedly perform puncture imaging confirmation in the operation step, so that the operation time is prolonged, the times of invasive operation are increased, the occurrence probability of vascular complications is increased, and the dosage of a contrast medium and the intraoperative fluoroscopy time are also increased.

Therefore, it is necessary to design a puncture system and a puncture method capable of accurately positioning a puncture site.

Disclosure of Invention

The utility model breaks through the difficult problems of the prior art and designs the puncture system and the puncture method which can accurately position the puncture part.

In order to achieve the purpose, the utility model designs a reverse puncture system capable of being accurately positioned, which comprises a handle mechanism, a sheath tube and a puncture needle, and is characterized in that: a needle outlet guide module is arranged in the sheath tube, and a puncture needle guide rail is arranged in the needle outlet guide module, so that a puncture needle can be discharged through the puncture needle guide rail;

the sheath tube is also provided with a left groove and a right groove, the shapes of the left groove and the right groove are matched with the shape of the needle outlet guide module, and the opening position of the right groove is higher than that of the left groove;

the sheath tube is internally provided with a leftward inclined ramp which is positioned below the right groove, the lowest position of the ramp is flush with the lowest point of the left groove, and the needle outlet guide module is positioned above the ramp;

the needle outlet guide module is connected with a traction wire, and the traction wire is connected with the handle mechanism, so that the handle mechanism drives the needle outlet guide module to move through the traction wire, and the puncture needle can be discharged through the puncture needle guide rail.

Further, go out needle guide module and divide into the head, the waist, the afterbody, the head right side is located the right side recess, the afterbody then is located the left side recess, when the needle guide module is gone out in the pulling, the pull silk pulling waist right side takes place the downwardly rotating, make the head rotate out from the right side recess, and the outer wall of head is tangent with the bottom cell wall of right side recess, both reach the conflict and seal, and according to lever principle, the afterbody of going out needle guide module then can upwards rotate, because sheath pipe inner space is limited, and the afterbody is located the ramp to the left slope again, and be close to the left side recess, thereby the afterbody can be followed the left side recess and rotated out, the upper and lower both sides of afterbody this moment respectively with the top of left side recess, the bottom cell wall is tangent, the afterbody stretches out the left side recess and blocks up the left side recess promptly, prevent that blood from getting into in the sheath pipe. Further, the needle outlet guide module has two forms: the needle-out guiding module (12) is driven by the traction wire (13) to be positioned in the sheath tube (7) in the initial form, and the needle-out guiding module (12) is driven by the traction wire (13) to be extended out of the sheath tube (7) in the needle-out form.

Further, the initial form is as follows: the needle outlet guide module is positioned in the left groove and the right groove, so that the two parts are prevented from being communicated, the puncture needle is prevented from being mistakenly discharged, the needle outlet guide module is completely fused into the sheath, and the surface of the sheath is smooth and has no protrusion.

Further, the needle outlet form is as follows: the traction wire drives the needle outlet guide module to rotate, the head of the needle outlet guide module rotates out of the right groove, the tail of the needle outlet guide module slides leftwards along the ramp and rotates out of the left groove, and the puncture needle guide rail is attached to the puncture needle head end at the moment, so that the puncture needle can be discharged through the puncture needle guide rail.

Further, handle mechanism includes handle casing, piston, spring, pull rod, the inside track that is equipped with of handle casing, but the track top is connected with the first dog that cooperates the track to remove, and first dog utilizes threaded connection and piston connection, the spring sets up inside the handle casing, pull rod one end is stretched into inside the handle casing and is connected with the one end of spring, and the other end of spring stretches into that the sheath is intraductal to link to each other with the traction wire.

Further, the sheath pipe is arranged on the upper portion of the handle shell and communicated with the handle shell, and a top hole is formed in the top end of the sheath pipe.

Furthermore, a first through hole penetrating through a puncture needle is formed in the center of the sloping table, a second through hole penetrating through a traction wire is formed in the position, close to the right groove, of the sloping table, a needle outlet guide module is embedded in the sheath tube between the left groove and the right groove above the sloping table, and the waist position on the right side of the needle outlet guide module is connected with the other end of the spring through the traction wire.

Preferably, the sheath is formed by injection molding of a polymer material, such as PEBAX.

Furthermore, a sealing ring is arranged between the first stop block and the piston.

Furthermore, the bottom end of the puncture needle penetrates through the handle mechanism and extends into the piston, the puncture needle and the handle mechanism are in a non-connection state, and the puncture needle and the handle mechanism are assembled together by utilizing a knob and a sealing ring on the piston.

Preferably, the top end of the puncture needle is a hard part made of hard materials and can complete puncture actions, and the tail end of the puncture needle is made of soft materials or a soft part made of soft processing so as to avoid damaging the inner wall of a blood vessel.

The utility model also designs a puncture method of the reverse puncture system capable of accurately positioning, which is characterized in that: the method comprises the following steps:

step 1 in place:

the needle-withdrawing guiding module is positioned at the puncture position, and is in an initial state at the moment;

step 2, opening the door:

the pull rod on the handle mechanism is pulled, so that the spring is pulled, the spring transmits the pulling force to the traction wire, the traction wire pulls the needle outlet guide module, the needle outlet guide module is changed into a needle outlet shape, namely, the head of the needle outlet guide module is rotated out from the right groove, the tail of the needle outlet guide module slides leftwards along the ramp and is rotated out from the left groove, and at the moment, the puncture needle guide rail is attached to the head end of the puncture needle, so that the puncture needle can penetrate out of the puncture needle guide rail;

step 3, needle withdrawing and puncturing:

the piston is pushed upwards to drive the first stop block and the puncture needle to move along the track, so that the puncture needle penetrates out of the puncture needle guide rail to complete needle withdrawing and puncturing actions;

step 4, dissociation of the needle:

fixing the puncture needle by using vascular forceps outside the skin, rotating the piston to loosen the piston and the stop block, and synchronously loosening the sealing ring from the original compressed state to finish the dissociation of the puncture needle and the puncture system; step 5, leaving a steel needle withdrawing system:

the puncture needle is fixed outside the skin, the pull rod resets, makes out the rotation of needle guide module through spring and traction wire once more, during the income sheath pipe, withdraws puncture system this moment, only remains the puncture needle, follow-up conventional puncture step of carrying on.

Compared with the prior art, the utility model designs the reverse puncture system and the puncture method capable of accurately positioning, which can be sent to a target blood vessel from a non-target blood vessel, thereby accurately positioning a puncture part, and then puncture the skin from the blood vessel to complete the puncture of the target blood vessel, thereby solving the problem of repeated angiography confirmation, reducing the operation time, reducing the times of invasive operation, reducing the probability of vascular complications, and simultaneously reducing the dosage of a contrast medium and the time of fluoroscopy in the operation.

Drawings

FIG. 1 is an initial state diagram of a precisely positionable reverse lancing system in one embodiment.

FIG. 2 is a diagram illustrating the needle-out state of a precisely positionable reverse lancing system in accordance with one embodiment.

FIG. 3 is an enlarged view of a needle exit guide module of a precisely positionable reverse puncturing system in one embodiment.

The needle drawing device comprises a handle shell 1, a piston 2, a spring 3, a pull rod 4, a track 5, a first stop dog 6, a sheath tube 7, a top hole 8, a left groove 9, a right groove 10, an inclined table 11, a needle drawing guide module 12, a traction wire 13, a puncture needle guide rail 14, a sealing ring 15 and a puncture needle 16.

Detailed Description

The utility model will be further described with reference to the accompanying drawings, but is not to be construed as being limited thereto.

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the utility model as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the utility model.

In the present invention, terms such as "upper", "lower", "front", "rear", "vertical", "horizontal", "side", "bottom", "top", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only terms of relationships determined for convenience in describing structural relationships of the parts or elements of the present invention, and are not intended to refer to any parts or elements of the present invention, and are not to be construed as limiting the present invention.

In the present invention, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be determined according to specific situations by persons skilled in the relevant scientific or technical field, and are not to be construed as limiting the present invention.

Referring to fig. 1 to 3, in an embodiment of the present invention, the reverse puncture system capable of accurate positioning is designed, including a handle mechanism, a sheath tube 7 and a puncture needle 16, where the sheath tube 7 is disposed on an upper portion of a handle housing 1 and is communicated with the handle housing 1, a top hole 8 is formed at a top end of the sheath tube 7, a needle outlet guide module 12 is disposed in the sheath tube 7, and a puncture needle guide rail 14 is disposed inside the needle outlet guide module 12, so that the puncture needle can be discharged through the puncture needle guide rail 14.

Correspondingly, the sheath tube 7 is further provided with a left groove 9 and a right groove 10, the shapes of the left groove and the right groove are matched with the shape of the needle outlet guide module 12, and the opening position of the right groove 10 is higher than that of the left groove 9.

Correspondingly, an inclined table 11 which inclines to the left is further arranged inside the sheath tube 7, the inclined table 11 is positioned below the right groove 10, the lowest position of the inclined table 11 is flush with the lowest point of the left groove 9, and the needle outlet guide module 12 is positioned above the inclined table 11;

correspondingly, a traction wire 13 is connected to the needle outlet guide module 12, the traction wire 13 is connected to the handle mechanism, so that the handle mechanism drives the needle outlet guide module 12 to rotate via the traction wire 13, the puncture needle guide rail 14 is attached to the puncture needle 16 after the needle outlet guide module 12 rotates, and the puncture needle can be discharged via the puncture needle guide rail 14.

Further, the needle outlet guide module 12 is divided into a head, a waist and a tail, the right side of the head is located in the right groove 10, and the tail is located in the left groove 9.

When the needle guide module 12 is pulled, the traction wire 13 pulls the right side of the waist to rotate downwards, so that the head rotates out of the right groove, the outer wall of the head is tangent to the bottom groove wall of the right groove 10, the head and the bottom groove wall are in conflict sealing, and according to the lever principle, the tail of the needle guide module 12 can rotate upwards, because the inner space of the sheath tube 7 is limited, the tail is located on the left inclined ramp 11 and is close to the left groove 9, so that the tail can rotate out of the left groove 9, the upper side and the lower side of the tail are tangent to the top of the left groove 9 and the bottom groove wall respectively, namely, the tail stretches out the left groove 9 and blocks the left groove 9, and blood is prevented from entering the sheath tube.

Preferably, the needle outlet guide module 12 has two forms: the initial configuration and the needle-out configuration.

The initial form is as follows: the needle outlet guide module 12 is positioned in the left groove 9 and the right groove 10, so that the two parts are prevented from being communicated, the puncture needle 16 is prevented from being mistakenly extruded, the needle outlet guide module 12 is completely fused into the sheath tube 7 at the moment, and the surface of the sheath tube 7 is smooth and has no protrusion.

The needle outlet form is as follows: the pull wire 13 drives the needle outlet guide module 12 to rotate, at the moment, the head of the needle outlet guide module 12 rotates out from the right groove 10, the tail of the needle outlet guide module 12 slides leftwards along the ramp 11 and rotates out from the left groove 9, and at the moment, the puncture needle guide rail 14 is attached to the head end of the puncture needle 16, so that the puncture needle 16 can be discharged through the puncture needle guide rail 14.

Correspondingly, handle mechanism includes handle housing 1, piston 2, spring 3, pull rod 4, handle housing 1 is inside to be equipped with track 5, and track 5 top is connected with the first dog 6 that can cooperate track 5 to remove, and first dog 6 utilizes threaded connection to be connected with piston 2 for being connected for dismantling between piston 2 and the first dog 6, make things convenient for subsequent puncture system to break away from, spring 3 sets up inside handle housing 1, 4 one ends of pull rod stretch into handle housing 1 inside and be connected with the one end of spring 3, and the other end of spring 3 stretches into in sheath pipe 7 and links to each other with traction wire 13, can pull the inside needle guide module 12 that goes out of sheath pipe 7 when making pull rod 4 pulling spring 3 rotate.

Preferably, the center of the sloping table 11 is provided with a first through hole penetrating through a puncture needle 16, a second through hole penetrating through a traction wire 13 is arranged at a position of the sloping table 11 close to the right groove 10, a needle outlet guide module 12 is embedded inside the sheath tube 7 between the left groove 9 and the right groove 10 above the sloping table 11, and the waist position at the right side of the needle outlet guide module 12 is connected with the other end of the spring 3 through the traction wire 13, so that the needle outlet guide module 12 can be driven to rotate through the traction wire 13.

Preferably, the sheath 7 is formed by injection molding of a polymer material such as PEBAX.

Further, a sealing ring 15 is arranged between the first stop 6 and the piston 2 for sealing a gap between the first stop 6 and the piston 2 and preventing the puncture needle 16 from being polluted by impurity and dust.

Further, the bottom end of the puncture needle 16 penetrates through the handle mechanism and extends into the piston 2, and the puncture needle 16 and the handle mechanism are in a non-connection state and are fixed through a knob on the piston 2 and a sealing ring 15.

After the needle outlet guide module 12 is rotated to the right position, the puncture needle 16 can be pushed to move upwards when the piston 2 is screwed, so that the puncture needle 16 penetrates through the puncture needle guide rail 14, but because the puncture needle 16 and the handle mechanism are in a non-connection state, namely, the puncture needle 16 and the handle mechanism are separated, when the piston 2 is loosened after the puncture needle 16 penetrates out, the puncture needle 16 cannot follow up, namely, the puncture needle 16 cannot return along with the piston 2, and therefore, the needle dissociation step can be easily completed.

Preferably, the tip of the puncture needle 16 is made of a hard material to perform a puncture operation, and the tip of the puncture needle 16 is made of a soft material or is subjected to a soft treatment to avoid damaging the inner wall of the blood vessel.

In a specific embodiment, a puncturing method of the reverse puncturing system capable of being accurately positioned is further designed, and the puncturing method is carried out according to the following steps:

step 1 in place:

the needle-out guide module 12 is positioned at the puncture position, and the needle-out guide module 12 is in an initial state at the moment;

step 2, opening the door:

the pull rod 4 on the handle is pulled, so that the spring 3 is pulled, the spring 3 transmits the pulling force to the pull wire 13, the pull wire 13 pulls the needle outlet guide module 12 positioned in the sheath tube 7, so that the needle outlet guide module 12 is changed into a needle outlet shape, namely, the head of the needle outlet guide module 12 is rotated out from the right groove 10, the tail of the needle outlet guide module 12 slides leftwards along the ramp 11 and is rotated out from the left groove 9, and at the moment, the puncture needle guide rail 14 is attached to the head end of the puncture needle 16, so that the puncture needle 16 can penetrate out of the puncture needle guide rail 14;

step 3, needle withdrawing and puncturing:

the piston 2 is pushed upwards to drive the first stop block 6 and the puncture needle 16 to move along the track 5, so that the puncture needle 16 penetrates out of the puncture needle guide rail 14 to complete the needle withdrawing and puncturing actions;

step 4, dissociation of the needle:

fixing the puncture needle 16 by using a vascular clamp for external application of skin, rotating the piston 2 to loosen the piston 2 and the first stop block 6, and synchronously loosening the sealing ring 15 from the original compressed state to finish the dissociation of the puncture needle 16 and a puncture system;

step 5, leaving a steel needle withdrawing system:

the puncture needle 16 is fixed outside the skin, the pull rod 4 is reset, the needle outlet guide module 12 is rotated again through the spring 3 and the pull wire 13 and is collected into the sheath tube 7, at the moment, the puncture system is withdrawn, only the puncture needle 16 is reserved, and the conventional puncture step is carried out subsequently.

The present invention will be described with reference to the case where the femoral artery (left and right) is branched downward from the abdominal artery (middle).

Firstly, the left femoral artery is taken as a target puncture point X, the right femoral artery is taken as an auxiliary access puncture point Y, a conventional guide wire is placed from the right femoral artery Y to the left target puncture blood vessel X, the end hole at the topmost end of the utility model is utilized to enable the whole sheath tube to enter the blood vessel along the guide wire to run, the sheath tube enters the blood vessel along the guide wire and reaches the blood vessel of the target puncture point X, after the puncture sheath tube reaches the target position under the irradiation of X rays, the handle body is pulled up, so that the needle outlet guide module and the sheath tube form an angle, the upper end points to the direction of needle outlet of the skin, the lower end can also play a relatively fixed role in the blood vessel, then the knob is pushed upwards to enable the puncture needle to be outlet, the puncture the skin is punctured from the blood vessel, finally, the steel needle is fixed at the skin, the puncture system is withdrawn, the puncture needle is kept in the blood vessel, the material at the tail end in the blood vessel is soft, the blood vessel can be prevented from being damaged, the sheath is then advanced along the needle and the conventional puncture procedure is resumed.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and additions can be made without departing from the method of the present invention, and these modifications and additions should also be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides a reverse puncture system that can pinpoint, includes handle mechanism, sheath pipe (7) and pjncture needle (16), its characterized in that: a needle outlet guide module (12) is arranged in the sheath tube (7), and a puncture needle guide rail (14) is arranged in the needle outlet guide module (12), so that a puncture needle can be discharged through the puncture needle guide rail (14);

the sheath tube (7) is also provided with a left groove (9) and a right groove (10), the shapes of the left groove and the right groove are matched with the shape of the needle outlet guide module (12), wherein the opening position of the right groove (10) is higher than the opening position of the left groove (9);

the sheath tube (7) is internally provided with a leftward inclined ramp (11), the ramp (11) is positioned below the right groove (10), the lowest position of the ramp (11) is flush with the lowest point of the left groove (9), and the needle outlet guide module (12) is positioned above the ramp (11); the needle outlet guide module (12) is connected with a traction wire (13), and the traction wire (13) is connected with the handle mechanism, so that the handle mechanism drives the needle outlet guide module (12) to move through the traction wire (13), and the puncture needle can be discharged through the puncture needle guide rail (14).

2. A precisely positionable reverse puncturing system according to claim 1, wherein: the needle outlet guide module (12) is divided into a head part, a waist part and a tail part, the right side of the head part is positioned in the right groove (10), and the tail part is positioned in the left groove (9).

3. A precisely positionable reverse puncturing system according to claim 1 or 2, wherein: the needle outlet guide module (12) is driven by the traction wire (13) to be positioned in the sheath tube (7) in an initial form, and the needle outlet guide module (12) is driven by the traction wire (13) to extend out of the sheath tube (7) in a needle outlet form;

the initial form is as follows: the needle outlet guide module (12) is positioned in the left groove (9) and the right groove (10) to prevent the two parts from being communicated and avoid the puncture needle (16) from being mistakenly extruded, at the moment, the needle outlet guide module (12) is completely fused into the sheath tube (7), and the surface of the sheath tube (7) is smooth and has no protrusion; the needle outlet form is as follows: the traction wire (13) drives the needle outlet guide module (12) to rotate, at the moment, the head of the needle outlet guide module (12) rotates out from the right groove (10), the tail of the needle outlet guide module (12) slides leftwards along the inclined platform (11) and rotates out from the left groove (9), and at the moment, the puncture needle guide rail (14) is attached to the head end of the puncture needle (16), so that the puncture needle (16) can be discharged through the puncture needle guide rail (14).

4. A precisely positionable reverse puncturing system according to claim 1, wherein: handle mechanism includes handle casing (1), piston (2), spring (3), pull rod (4), handle casing (1) inside is equipped with track (5), and track (5) top is connected with first dog (6) that can cooperate track (5) to remove, and first dog (6) utilize threaded connection to be connected with piston (2), spring (3) set up inside handle casing (1), pull rod (4) one end is stretched into handle casing (1) inside and is connected with the one end of spring (3), and the other end of spring (3) stretches into in sheath pipe (7) and links to each other with traction wire (13).

5. A precisely positionable reverse puncturing system according to claim 1, wherein: sheath pipe (7) set up on handle casing (1) upper portion and with handle casing (1) intercommunication, apical pore (8) have been seted up on the top of sheath pipe (7).

6. A precisely positionable reverse puncturing system according to claim 1, wherein: the utility model discloses a needle drawing device, including ramp (11), ramp (11) center is equipped with the first through-hole that passes via pjncture needle (16), the position that ramp (11) are close to right side recess (10) is equipped with the second through-hole that passes via traction wire (13), and sheath pipe (7) inside between left side recess (9), right side recess (10) of ramp (11) top is inlayed and is equipped with out needle guide module (12), it utilizes traction wire (13) and spring (3) other end to link to each other to go out needle guide module (12) right side waist position.

7. A precisely positionable reverse puncturing system according to claim 1, wherein: the sheath (7) is made of high polymer materials.

8. A precisely positionable reverse puncturing system according to claim 4, wherein: and a sealing ring (15) is also arranged between the first stop block (6) and the piston (2).

9. A precisely positionable reverse puncturing system according to claim 1, wherein: the bottom end of the puncture needle (16) penetrates through the handle mechanism and extends into the piston (2), the puncture needle (16) and the handle mechanism are in a non-connection state, and the puncture needle and the handle mechanism are fixed through a knob on the piston (2) and a sealing ring (15).

10. A precisely positionable reverse puncturing system according to claim 9, wherein: the top end of the puncture needle (16) is a hard part, and the tail end of the puncture needle (16) is a soft part.

Images