CN112971936B

CN112971936B - Puncture instrument suitable for after percutaneous intervention

Info

Publication number: CN112971936B
Application number: CN202110201603.8A
Authority: CN
Inventors: 祝恒
Original assignee: Jiangxi Qiaoming Medical Instrument Co ltd
Current assignee: Jiangxi Qiaoming Medical Instrument Co ltd
Priority date: 2021-02-23
Filing date: 2021-02-23
Publication date: 2022-11-08
Anticipated expiration: 2041-02-23
Also published as: CN112971936A

Abstract

The invention provides a puncture instrument suitable for percutaneous intervention, which comprises a first puncture cannula, a second puncture cannula and a puncture needle, wherein the head end of the puncture needle can penetrate into the second puncture cannula from the first puncture cannula, the tail end of the second puncture cannula is inserted into the first puncture cannula, the head end of the second puncture cannula extends out, the second puncture cannula can rotate relative to the first puncture cannula, the second puncture cannula is provided with a side opening, a structure for changing the penetrating direction of the head end of the puncture needle from the second puncture cannula is arranged in the second puncture cannula, and a driving mechanism for pulling the structure is arranged on the second puncture cannula. The invention has better treatment effect, because only a single tube can play the role of a double tube, the tube diameter of the corresponding puncture cannula can be reduced, so that the damaged area of the tissue is correspondingly smaller than that of the double tube when the puncture cannula is inserted and left at each time, the tissue pain of the puncture part and the similar part can be reduced during puncture, and the puncture hemorrhage can be reduced.

Description

Puncture instrument suitable for after percutaneous intervention

Technical Field

The invention relates to the technical field of medical appliances, in particular to a puncture appliance suitable for percutaneous intervention.

Background

The puncture outfit is a minimally invasive treatment operating device for positioning, expanding, implanting, radio frequency, ablating, injecting, anaesthetizing, biopsy extracting, operating and the like of tissues in vivo (such as organs in chest and abdominal cavity and deep tissues of brain, nerve, blood vessel, gland and the like) after percutaneous intervention. Current lancing devices are either straight or angled single axis lancing devices when extended. The single-axial puncture outfit ensures that the puncture needle can only be punctured to perform treatment in a few areas near the single-axial axis, and most areas outside the axis become blind areas, so that only simple minimally invasive treatment can be performed by one-time interventional indwelling; for the treatment of large-area lesion tissues, the treatments such as injection, biopsy extraction, anesthesia, operation and the like can be completed only by multiple intervention and retention, so that the treatment time is increased, the damaged area of the intervention tissues is enlarged, the treatment risk is improved, the treatment difficulty is increased, and the pain index of a patient is increased. In order to solve the problem, a multi-axial puncture outfit for internal deep tissues (hereinafter referred to as the scheme) disclosed in chinese patent No. CN101984922B comprises a puncture needle and a puncture cannula, wherein the needle end of the puncture needle is provided with an oblique notch, the puncture cannula is provided with a side opening, and an elastic tongue piece and the like are arranged on the edge of a proximal tube head of the side opening. The multi-axial puncture outfit for the deep tissues in the body can treat at least two axial directions by one-time interventional indwelling, the treatment area is correspondingly larger, and the interventional indwelling deep tissues have smaller damaged tissue area.

However, the scheme still has the following defects: firstly, the syringe needle end of pjncture needle is stretched out by the side opening, when carrying out the wicresoft treatment to the sheathed tube peripheral tissue of puncturing, need rotatory puncture sleeve pipe, just so probably arouse the painful sense of puncture position and close position, and can cause the puncture blood to increase, secondly, stretch out by the side opening at the syringe needle end of pjncture needle, need earlier stretch into the direction syntropy with the elastic tongue piece slant with the scarf of syringe needle end, the operation needs keep not taking place relative rotation when the puncture needle inserts at puncture sleeve pipe like this, otherwise can not realize the scarf and the oblique cooperation of elastic tongue piece of syringe needle end, thereby probably lead to the syringe needle end can't follow the side opening and stretch out, just need carry out mediation many times. Moreover, the solution is only suitable for the needle end with the oblique incision, and the blunt puncture needle is not suitable. In addition, the needle head end can extend out from the side opening only by depending on the elasticity of the tongue piece, when the inclined cut of the needle head end and the elastic tongue piece extend obliquely in the same direction, and when the force is applied greatly, the needle head end can push the elastic tongue piece to the tube head, so that the tongue piece is damaged.

Disclosure of Invention

The present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a puncture device suitable for use after percutaneous intervention.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a puncture utensil suitable for after percutaneous intervention, includes first puncture sleeve pipe, second puncture sleeve pipe and pjncture needle, the head end of pjncture needle can penetrate the second puncture sleeve pipe by first puncture sleeve pipe in, the tail end cartridge of second puncture sleeve pipe is in first puncture sleeve pipe, and the sheathed tube head end of second puncture stretches out, and this second puncture sleeve pipe can rotate for first puncture sleeve pipe, the side opening has on the second puncture sleeve pipe, install the structure that the head end that is used for changing the pjncture needle wore out the direction from second puncture sleeve pipe in the second puncture sleeve pipe, it is right to be provided with on the second puncture sleeve pipe the actuating mechanism that the structure carries out the pulling.

Preferably, the structure includes the tongue piece that can the perk and put down, actuating mechanism includes stay cord and elastic cord, the stay cord is used for pulling the tongue piece perk, the elastic cord is used for putting down the tongue piece pull-back when removing the stay cord effort.

Preferably, the tail end side of the tongue piece is hinged to the inner wall of the second puncture sleeve, a stay cord channel is arranged on the pipe wall of the second puncture sleeve along the axial direction, the head end of the stay cord is connected with the side face of the tongue piece, the tail end of the stay cord penetrates out along the stay cord channel and is exposed, a groove used for containing the tongue piece is formed in the inner wall of the second puncture sleeve, a blind road is formed in the inner wall located below the groove, the head end of the elastic rope is connected to the back face of the tongue piece, the tail end of the elastic rope is connected to the tail end of the blind road, and when the tongue piece is contained in the groove, the elastic rope is contained in the blind road.

Preferably, the stay cord channel comprises a first channel and a second channel, the first channel is connected with the second channel, the axes of the first channel and the second channel coincide, the first channel is located near the tongue piece, the inner diameter of the first channel is larger than that of the second channel, the stay cord is provided with a limiting block in a serial mode, and the limiting block is located in the first channel and can slide in the first channel.

Preferably, the stay cord passageway includes first passageway and second passageway, first passageway links to each other with the second passageway, and the coincidence of the two axis, first passageway is in and is close to tongue piece department, and the internal diameter of first passageway is greater than the internal diameter of second passageway, through locking bolt cluster stopper on the stay cord, this stopper is located first passageway, and can slide in the first passageway.

Preferably, the inner wall of the first puncture cannula is provided with an annular groove, the second puncture cannula is sleeved with a rotating ring, and the rotating ring is matched with the annular groove and can rotate in the annular groove.

Compared with the prior art, the invention has the beneficial effects that:

when the puncture cannula is clinically applied, the puncture cannula comprises a first channel and a second channel and is provided with a head end and a tail end, when the puncture needle is inserted into a lumen from the tail of the tube, when the head end of the puncture needle needs to extend out from the side opening, the tongue piece can rotate at one side by pulling the tail end of the stay cord, so that the head end of the tongue piece upwarps, the head end of the puncture needle passes through the tongue piece to transition to the side opening, so as to extend out, and the minimally invasive treatment is carried out on the peripheral tissues of the puncture cannula, only the second puncture cannula needs to be slightly rotated, but the first puncture cannula is kept relatively motionless, the minimally invasive treatment can be carried out on other peripheral tissues of the puncture cannula, the slightly rotated relatively multiple interventions have less influence on the tissues, and the puncture cannula only partially rotates the second puncture cannula, the puncture position and the tissue pain of the similar position caused by the puncture are greatly reduced, the puncture bleeding is also reduced, the pull rope does not need to be operated when the head end of the puncture needle needs to extend out from the head end of the second channel, after the head end of the puncture needle extends out from the head end of the second channel, the axial tissue of the puncture cannula is subjected to minimally invasive treatment, and the puncture cannula has the straight and inclined functions, so that the periphery and the axial tissue of the puncture cannula can be subjected to minimally invasive treatment such as injection, biopsy extraction, anesthesia and operation through one-time intervention and retention, the minimally invasive treatment area is larger, the treatment effect is better, the corresponding puncture cannula tube diameter can be reduced because the double-tube effect can be exerted only by a single tube, and the damaged area of the puncture cannula in each intervention and retention is correspondingly smaller than that of the double-tube. Therefore, the invention provides a multi-axial puncture instrument for deep tissues in vivo, which can treat at least two axial directions by one-time interventional indwelling and has a correspondingly large treatment area and a small damaged area of the indwelling tissues.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the needle of the present invention extending from the head end of a second cannula;

FIG. 3 is a right side elevational view of the second piercing cannula of FIG. 1 or FIG. 2 in accordance with the present invention;

FIG. 4 isbase:Sub>A schematic cross-sectional (partial) view taken at A-A of FIG. 3 in accordance with the present invention;

FIG. 5 is an enlarged view of the point A in FIG. 2 according to the present invention;

FIG. 6 is an exploded view of the present invention shown in FIG. 5;

FIG. 7 is a schematic view of another embodiment of the present invention;

FIG. 8 is a schematic view of the limiting block in FIG. 7 fixed to a pull rope through a lock nut.

In the figure: the puncture needle comprises a first puncture cannula 1, a second puncture cannula 2, a puncture needle 3, a side opening 4, a tongue piece 5, a groove 6, a rope pulling channel 7, a rope pulling 8, a limiting block 9, a blind channel 10, an elastic rope 11, a rotating ring 12, a first channel 13, a second channel 14, an annular groove 15 and a locking bolt 16.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

referring to fig. 1 to 6, the present invention provides a technical solution:

the utility model provides a puncture utensil suitable for after percutaneous intervention, includes the puncture cannula, the puncture cannula includes first puncture cannula 1, second puncture cannula 2 and pjncture needle 3, the head end (the head end is based on external operation end and is carried out the definition for the tail end) of pjncture needle 3 can penetrate in the second puncture cannula 2 by first puncture cannula 1, the tail end cartridge of second puncture cannula 2 is in first puncture cannula 1, and the head end of second puncture cannula 2 stretches out, and this second puncture cannula 2 can rotate for first puncture cannula 1, second puncture cannula 2 is last to have side opening 4, install the structure that is used for changing the head end of pjncture needle 3 and wears out the direction from second puncture cannula 2 in the second puncture cannula 2, be provided with on the second puncture cannula 2 and be used for right the structure carries out the actuating mechanism that pulls.

The structure is including the tongue 5 that can perk and put down, actuating mechanism includes stay cord 8 and elastic cord 11, stay cord 8 is used for pulling the tongue 5 perk, elastic cord 11 is used for pulling back tongue 5 when removing 8 effort to the stay cord and puts down. Specifically, the tail end side of the tongue piece 5 is hinged to the inner wall of the second puncture sleeve 2, a stay cord channel 7 is arranged on the pipe wall of the second puncture sleeve 2 along the axial direction, the head end of the stay cord 8 is connected with the side face of the tongue piece 5, the tail end of the stay cord 8 penetrates out of the stay cord channel 7 to be exposed, a groove 6 used for accommodating the tongue piece 5 is formed in the inner wall of the second puncture sleeve 2, a blind road 10 is formed in the inner wall below the groove 6, the head end of the elastic cord 11 is connected to the back face of the tongue piece 5, the tail end of the elastic cord 11 is connected to the tail end of the blind road 10, and when the tongue piece 5 is accommodated in the groove 6, the elastic cord 11 is accommodated in the blind road 10.

In this embodiment, the pulling rope 8 may be a flexible thin steel wire. As shown in fig. 2, in the initial state, the tongue piece 5 is housed in the notch 6, and when it is necessary to extend the tip end of the puncture needle 3 from the side opening 4, the tongue piece 5 is pulled out from the notch 6, and the tip end of the tongue piece 5 is tilted upward. When the head end of tongue piece 5 perk, perk height H is not less than the third of second puncture cannula 2 internal diameter, and perk height H is preferably second puncture cannula 2 internal radius, and after the complete perk of the head end of tongue piece 5, flushes with the bottom that side opening 4 is close to the head end, and the purpose that sets up like this is: the puncture needle 3 with different diameters can be extended from the side opening 4, and the puncture diameter of the puncture needle 3 is increased as much as possible under the premise that the inner diameter of the (first puncture cannula 1 and) second puncture cannula 2 is not changed, and the head end of the puncture needle can be easily extended to the side opening 4 and extended from the side opening 4.

In this embodiment, the tongue piece 5 is formed as a curved plate, and the upper surface thereof is flush with the inner wall of the second puncture cannula 2 after being accommodated in the recess 6, so that the projection of the puncture needle 3 from the tip end of the second puncture cannula 2 is not hindered. Moreover, in order to ensure that the tongue piece 5 can be pulled up by the pulling rope 8 smoothly, so that the head end of the tongue piece 5 is tilted up, the pulling rope 8 (pulling rope channel 7) can be arranged in 2 symmetrical pieces.

Specifically, the pull rope channel 7 includes a first channel 13 and a second channel 14, the first channel 13 is connected to the second channel 14, and the axes of the first channel 13 and the second channel 14 coincide, the first channel 13 is located near the tongue piece 5, and the inner diameter of the first channel 13 is greater than the inner diameter of the second channel 14, the pull rope 8 is provided with a limiting block 9 in series, and the limiting block 9 is located in the first channel 13 and can slide in the first channel 13.

In this embodiment, through setting up stopper 9, can restrict 8 pulling distances of stay cord for the protection tongue piece 5 process of pulling up and the final perk state. Through the arrangement of the pull rope 8, after the tongue piece 5 is pulled up, the head end of the puncture needle 3 can be conveniently transited to the side opening 4 through the tongue piece 5, and due to the pulling force of the pull rope 8, the puncture needle can adapt to the larger puncture force of the puncture needle 3, the tongue piece 5 cannot be turned over, and the risk that the tongue piece 5 is turned over in a pushing mode in the prior art can be avoided.

In this embodiment, as shown in fig. 4, when the limiting block 9 moves to the joint of the first channel 13 and the second channel 14, the tongue piece 5 is completely pulled up, and at this time, the head end of the tongue piece 5 is completely tilted, and the tail end of the exposed pulling rope 8 is fixed, so that the head end of the puncture needle 3 can extend out of the side opening 4. As shown in FIG. 1, the first puncture cannula 1 and the second puncture cannula 2 have the same inner diameter and the flush outer surfaces, which facilitates puncturing by the entire puncturing device.

Specifically, an annular groove 15 is formed in the inner wall of the first puncture cannula 1, a rotating ring 12 is sleeved on the second puncture cannula 2, and the rotating ring 12 is matched with the annular groove 15 and can rotate in the annular groove 15.

In this embodiment, as shown in fig. 2 and 5 to 6, by providing the rotating ring 12, the head end of the second puncture cannula 2 can be rotated according to the direction B or the opposite direction in fig. 1, so that the head end of the puncture needle 3 can be rotated after extending out of the side opening 4, and the rotation of the whole puncture cannula can be avoided, and thus, only a part of the puncture cannula rotates, which can reduce the pain caused by the puncture site and the adjacent sites during the minimally invasive treatment of the peripheral tissues of the puncture cannula, and reduce the puncture bleeding. The head end of the second puncture cannula 2 may protrude outside the head end of the first puncture cannula 1 (not shown in the figure). The side opening 4 can be V-shaped or U-shaped or arc-shaped, the head end of the puncture needle 3 can be a head end with a bevel cut, can also be conical or blunt, after the head end of the puncture needle 3 extends out of the side opening 4, the pull rope 8 is loosened, and the tongue piece 5 is pulled back into the groove 6 under the action of the elastic rope 11.

Example 2:

referring to fig. 7 to 8, the same as embodiment 1, except that:

the pull rope channel 7 comprises a first channel 13 and a second channel 14, the first channel 13 is connected with the second channel 14, the axes of the first channel 13 and the second channel 14 are overlapped, the first channel 13 is located near the tongue piece 5, the inner diameter of the first channel 13 is larger than that of the second channel 14, a limiting block 9 is strung on the pull rope 8 through a locking nut 16, and the limiting block 9 is located in the first channel 13 and can slide in the first channel 13.

In embodiment 1, the position where the stopper 9 is fixed to the pull rope 8 in the first channel 13 is preset, that is, the stopper 9 is fixed after being strung on the pull rope 8, and the stopper 9 and the pull rope 8 cannot move relatively. In this embodiment, the position of the limiting block 9 fixed on the pulling rope 8 in the first channel 13 is adjustable, specifically: when the limiting block 9 needs to be fixed after being stringed to the pull rope 8, the semi-countersunk locking bolt 16 is screwed into the limiting block 9 by using a screwdriver, the pull rope 8 is tightly pushed by the end part of the locking bolt 16, so that the fixing of the pull rope and the limiting block is realized, the tail end of the pull rope 8 is inserted into the pull rope channel 7 and extends out, when the position of the limiting block 9 needs to be adjusted, the pull rope 8 is pulled out from the pull rope channel 7, then the screwdriver is used for loosening the locking bolt 16, the limiting block 9 is loosened and adjusted to a required position, the locking bolt 16 is fixed, and then the pull rope 8 penetrates into the pull rope channel 7 again. The height of the pulling tongue piece 5 for tilting can be controlled by adjusting the position of the limiting block 9, so that the diameter of the head end of the puncture needle 3 can be flexibly adjusted, and the side opening can be conveniently and smoothly extended out.

In the invention, when in clinical application, the puncture cannula comprises a first channel 13 and a second channel 14, and has two outlets of a head end and a tail end, when the puncture needle 3 is inserted into a lumen from the tail of the tube, and the head end of the puncture needle 3 needs to extend out from the side opening 4, the tongue piece 5 can rotate at one side by pulling the tail end of the pull rope 8, so that the head end of the tongue piece 5 upwarps, the head end of the puncture needle 3 is transited to the side opening 4 through the tongue piece 5, thereby extending out, and carrying out minimally invasive treatment on peripheral tissues of the puncture cannula, only slightly rotating the second puncture cannula 2, and keeping the first puncture cannula 1 relatively motionless, and carrying out the minimally invasive treatment on other peripheral tissues of the puncture cannula, slightly rotating the second puncture cannula 2 for relatively many times and having less influence on the tissues, and the puncture cannula only partially rotating the second puncture cannula 2, therefore, the tissue pain of the puncture part and the similar part caused by the puncture is greatly reduced, the puncture hemorrhage is also reduced, when the head end of the puncture needle 3 needs to extend out from the head end of the second channel 14, the pull rope 8 does not need to be operated, after the head end of the second channel 14 extends out, the minimally invasive treatment is carried out on the axial tissue of the puncture cannula, as the puncture needle has the functions of straight and inclined, the minimally invasive treatment such as injection, biopsy extraction, anesthesia and operation can be carried out on the periphery and the axial tissue of the puncture cannula through one-time intervention and retention, the minimally invasive treatment area is larger, the treatment effect is better, as the double-tube effect can be exerted through only a single tube, the tube diameter of the corresponding puncture cannula can be reduced, and the damaged area of the retention tissue through each intervention is correspondingly smaller than that of the double-tube. Therefore, the invention provides a multi-axial puncture instrument for deep tissues in vivo, which can treat at least two axial directions by one-time interventional indwelling and has a correspondingly large treatment area and a small damaged area of the indwelling tissues.

The invention is easy to extend from the side opening 4 or the head end of the second channel 14 at the head end of the puncture needle 3, is suitable for the shapes of the head ends of different types of puncture needles 3, has less puncture times and basically only needs one time. The puncture needle does not need to be inserted into the tongue piece 5 after being angularly adjusted according to the shape of the tip end of the puncture needle 3, and then to be extended.

The materials, dimensions, etc. of the remaining portions of the present invention, such as the first puncture cannula 1, the second puncture cannula 2, the puncture needle 3, and the tongue, are known to the prior art or the related art, and will not be described in detail herein.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A puncture device suitable for use after percutaneous intervention, comprising: including first puncture sleeve pipe (1), second puncture sleeve pipe (2) and pjncture needle (3), the head end of pjncture needle (3) can be penetrated in second puncture sleeve pipe (2) by first puncture sleeve pipe (1), the tail end cartridge of second puncture sleeve pipe (2) is in first puncture sleeve pipe (1), and the head end of second puncture sleeve pipe (2) stretches out, and this second puncture sleeve pipe (2) can rotate for first puncture sleeve pipe (1), side opening (4) have on second puncture sleeve pipe (2), install the structure that the head end that is used for changing pjncture needle (3) was worn out the direction from second puncture sleeve pipe (2) in second puncture sleeve pipe (2), it is right to be provided with on second puncture sleeve pipe (2) the structure carries out the actuating mechanism that stimulates, the structure is including tongue piece (5) that can perk and put down, actuating mechanism includes tongue piece (8) and elasticity rope (11), stay cord (8) are used for pulling tongue piece (5) perk, elasticity rope (11) are used for withdrawing when pulling action force (5) and will put down.

2. A puncture device adapted for use after percutaneous intervention according to claim 1, wherein: the tail end side of the tongue piece (5) is hinged to the inner wall of the second puncture sleeve (2), a stay cord channel (7) is arranged on the pipe wall of the second puncture sleeve (2) along the axial direction, the head end of the stay cord (8) is connected with the side face of the tongue piece (5), the tail end of the stay cord (8) penetrates out along the stay cord channel (7) to be exposed, a groove (6) used for accommodating the tongue piece (5) is formed in the inner wall of the second puncture sleeve (2), a blind road (10) is formed in the inner wall below the groove (6), the head end of the elastic cord (11) is connected to the back face of the tongue piece (5), the tail end of the elastic cord (11) is connected to the tail end of the blind road (10), and when the tongue piece (5) is accommodated in the groove (6), the elastic cord (11) is accommodated in the blind road (10).

3. A puncture device adapted for use after percutaneous intervention according to claim 2, wherein: stay cord passageway (7) are including first passageway (13) and second passageway (14), first passageway (13) link to each other with second passageway (14), and the coincidence of the two axis, first passageway (13) are in and are close to tongue (5) department, and the internal diameter of first passageway (13) is greater than the internal diameter of second passageway (14), stay cord (8) are gone up to cluster stopper (9), and this stopper (9) are located first passageway (13), and can slide in first passageway (13).

4. A puncture device adapted for use after percutaneous intervention according to claim 2, wherein: stay cord passageway (7) include first passageway (13) and second passageway (14), first passageway (13) link to each other with second passageway (14), and the coincidence of the two axis, first passageway (13) are in and are close to tongue piece (5) department, and the internal diameter of first passageway (13) is greater than the internal diameter of second passageway (14), stay cord (8) are gone up and are strung stopper (9) through locking bolt (16), and this stopper (9) are located first passageway (13), and can slide in first passageway (13).

5. A puncture device adapted for use after percutaneous intervention according to claim 1, wherein: the inner wall of the first puncture cannula (1) is provided with an annular groove (15), the second puncture cannula (2) is sleeved with a rotating ring (12), and the rotating ring (12) is matched with the annular groove (15) and can rotate in the annular groove (15).