CN111658084A

CN111658084A - Puncture dilator

Info

Publication number: CN111658084A
Application number: CN202010469886.XA
Authority: CN
Inventors: 夏金凤; 魏信鑫; 马奔; 袁栋平
Original assignee: Dongguan Kewei Medical Instrument Co Ltd
Current assignee: Dongguan Kewei Medical Instrument Co Ltd
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2020-09-15
Anticipated expiration: 2040-05-28
Also published as: CN111658084B

Abstract

The invention discloses a puncture dilator, comprising: the tube body expanding piece is movably arranged in the diode body; the secondary pipe body is made of elastic materials; wherein, the expansion of the secondary tube body is realized by the motion of the tube body expansion piece in the secondary tube body. Through the one-level body, the cooperation of second grade body and body expansion piece is used, the one-level body tentatively expands earlier, further expand through the second grade body again, body expansion piece combines with the second grade body, because the elastic action of diode body makes it take place deformation, and then the external diameter of increase second grade body, increase expansion degree, the expansion of going on through this mode, need not to carry out puncture many times, reduce puncture step and time, convenient operation, and can also the risk of greatly reduced in-process blood loss.

Description

Puncture dilator

Technical Field

The invention relates to the technical field of medical instruments, in particular to a puncture dilator.

Background

Percutaneous puncture has been widely used in clinical practice at present, and puncture dilator mainly used expands the puncture position of body surface to the transport of intervention apparatus, puncture dilator generally include the body, and the distal end of body tapers, and the guide of being convenient for penetrates, and the near-end of body is installed with the stalk portion, is convenient for hold or cooperate with other devices.

Among the prior art, adopt many not unidimensional bodys to expand, until expanding required degree, not only need puncture many times, increase puncture number of times, step and time, but also have great risk, lead to more blood loss's phenomenon easily.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a puncture dilator.

The invention discloses a puncture dilator, comprising: the tube body expanding piece is movably arranged in the diode body; the secondary pipe body is made of elastic materials; wherein, the expansion of the secondary tube body is realized by the motion of the tube body expansion piece in the secondary tube body.

According to an embodiment of the present invention, the primary tube body includes a head and a primary tube body, the head is disposed at a distal end of the primary tube body, the secondary tube body is sleeved on the primary tube body, and the distal end of the secondary tube body abuts against a proximal end of the head; the pipe body expansion piece is movably sleeved on the first-stage pipe body.

According to an embodiment of the present invention, the secondary tube is disposed at a first angle with respect to the head, and the first angle is an obtuse angle or a straight angle (i.e. the included angle between the secondary tube and the head is an obtuse angle or a straight angle).

According to one embodiment of the invention, the proximal end of the secondary tube body is provided with a tapered bore.

According to an embodiment of the present invention, the tube expansion member includes a third tube body movably sleeved on the first tube body.

According to an embodiment of the present invention, the tube expansion member further includes an expansion tube movably sleeved on the third stage tube.

According to one embodiment of the invention, the three-stage pipe body and the expansion pipe body are both provided with a pushing handle; the expansion pipe body is provided with a first pushing groove which avoids the pushing handle.

According to one embodiment of the invention, the end of the push handle is provided with a transition bevel.

According to an embodiment of the invention, the disposable endoscope further comprises a tube body protecting shell, the tube body protecting shell is arranged at the near end of the secondary tube body, and the tube body expanding piece is movably arranged in the tube body protecting shell.

According to an embodiment of the present invention, the tube protective housing is provided with a second push groove along which the tube expansion member moves.

According to an embodiment of the present invention, the tube protective housing is provided with fixing grooves through which the tube expansion member is fixed.

The invention has the beneficial effects that through the matching use of the primary tube body, the secondary tube body and the tube body expansion piece, the primary tube body is initially expanded and then further expanded through the secondary tube body, the tube body expansion piece is combined with the secondary tube body, the diode body deforms under the elastic action, so that the outer diameter of the secondary tube body is increased, the expansion degree is increased, and through the expansion in the mode, multiple times of puncture is not needed, the puncture steps and time are reduced, the operation is convenient, and the risk of blood loss in the process can be greatly reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a perspective view of the puncture dilator in the embodiment;

FIG. 2 is an exploded view of the puncture dilator of the embodiment;

FIG. 3 is a perspective view of a primary pipe body according to an embodiment;

FIG. 4 is a sectional view of the secondary tube body in the embodiment;

FIG. 5 is a perspective view of the third stage pipe in the embodiment;

FIG. 6 is a perspective view of a four-stage tube in the embodiment;

FIG. 7 is a perspective view of a fifth stage pipe in the embodiment;

FIG. 8 is a perspective view of a sixth stage pipe in the embodiment;

fig. 9 is a perspective view of the tube body protecting case in the embodiment.

Description of the reference numerals

1-a first-stage pipe body; 11-a head; 12-first-stage pipe body; 2-a second-stage pipe body; 21-a tapered hole; 3-pipe body expanding piece; 31-a tertiary pipe body; 32-expanding the tube body; 321-a fourth-stage pipe body; 322-five stage tube body; 323-six stage pipe body; 33-a push handle; 331-transition hypotenuse; 34-a first push chute; 4-a first angle; 5, protecting the pipe body; 51-a second push chute; 52-fixed groove.

Detailed Description

In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

It should be noted that in the present invention, "proximal" and "distal" are relative orientations, relative positions, directions of elements or actions with respect to each other from the perspective of a physician using the medical device, although "proximal" and "distal" are not intended to be limiting, the term "proximal" generally refers to the end of the medical device that is closer to the physician during normal operation, and "distal" generally refers to the end that is first introduced into the patient.

As shown in fig. 1-2, fig. 1 is a perspective view of the puncture dilator in the embodiment; fig. 2 is an exploded view of the puncture dilator of the example. The puncture dilator comprises a primary tube body 1, a secondary tube body 2 and a tube body expanding piece 3, wherein the secondary tube body 2 is positioned at the near end of the primary tube body 1, the tube body expanding piece 3 is positioned at the near end of the secondary tube body 2, and the tube body expanding piece 3 is movably arranged in the secondary tube body 2; the second-stage tube body 2 is made of elastic materials, wherein the tube body expansion piece 3 moves in the second-stage tube body 2 to change the outer diameter of the second-stage tube body 2, and finally the diameter change of the diode body is realized.

Specifically, the outer diameter of the secondary pipe body 2 is larger than that of the primary pipe body 1.

When the puncture expander is used, insert corresponding position with one-level body 1 earlier, continuously push the puncture expander again for second grade body 2 reaches 1 position of one-level body, do further expansion, promote body extension member 3 afterwards, because second grade body 2 is the elasticity material, after body extension member 3 combines with second grade body 2, deformation takes place for second grade body 2, the external diameter of second grade body 2 is propped greatly promptly, suitable degree is expanded to final corresponding position, can carry out processing on next step.

Referring to fig. 3, fig. 3 is a perspective view of the primary pipe 1 according to the embodiment. The primary tube body 1 comprises a head 11 and a primary tube body 12, the head 11 is arranged at the far end of the primary tube body 12, the secondary tube body 2 is sleeved on the primary tube body 12, and the far end of the secondary tube body 2 is connected with the near end of the head 11; the pipe body expansion piece 3 is movably sleeved on the first-stage pipe body 12. When the pipe is used specifically, the outer diameter of the head 11 is larger than that of the first-stage pipe body 12, so that a step exists at the joint of the head 11 and the first-stage pipe body 12, and the second-stage pipe body 2 is located at the step. Preferably, in order to make the transition between the head 11 and the secondary pipe 2 smooth and gentle and reduce the damage to the corresponding portion, the joint of the secondary pipe 2 and the head 11 is set at a first angle 4, specifically, the first angle 4 is an obtuse angle or a straight angle.

Referring also to fig. 4, fig. 4 is a sectional view of the secondary pipe body 2 in the embodiment. Preferably, the proximal end of the secondary pipe body 2 is provided with a tapered hole 21, through the arrangement of the tapered hole 21, the movement of the pipe body expansion member 3 into the secondary pipe body 2 is facilitated, and in addition, the arrangement of the tapered hole 21 also plays a guiding role for the pipe body expansion member 3.

Referring to fig. 5 to 8 together, fig. 5 is a perspective view of the tertiary pipe 31 in the embodiment; FIG. 6 is a perspective view of the four-stage pipe 321 in the embodiment; fig. 7 is a perspective view of the fifth-stage pipe 322 in the embodiment; fig. 8 is a perspective view of the sixth-stage pipe 34 in the embodiment. Referring to fig. 2 again, the tube expansion member 3 includes a third tube 31, the third tube 31 is movably sleeved on the first tube 12, and the distal end of the third tube 31 abuts against the tapered hole 21. During the specific application, the external diameter of tertiary body 31 is greater than the aperture of bell mouth 21, and tertiary body 31 inserts in second grade body 2, props second grade body 2 from inside to outside greatly for 2 external diameters grow of second grade body.

Preferably, the tube expanding member 3 further includes an expanding tube 32, the expanding tube 32 is movably sleeved on the third tube 31, when the third tube 31 is inserted into the second tube 2, the expanding tube 32 is inserted into the second tube 2, and after the third tube 31 is expanded, the expanding tube 32 is inserted into the third tube 31 for further expansion.

During the concrete application, the expansion body 32 includes level four body 321, and level four body 321 movable sleeve locates tertiary body 31, and the external diameter of level four body 321 is greater than tertiary body 31, inserts secondary body 2 back when tertiary body 31, also inserts secondary body 2 with level four body 321 again in, and at this moment, level four body 321 is located between tertiary body 31 outer wall face and the 2 internal faces of secondary body, further props big secondary body 2 external diameters, realizes the expansion.

Further, the expansion pipe body 32 can also include a fifth-stage pipe body 322, the fourth-stage pipe body 321 is located to the fifth-stage pipe body 322 movable sleeve, the outer diameter of the fifth-stage pipe body 322 is greater than the fourth-stage pipe body 322, after the fourth-stage pipe body 321 is inserted into the second-stage pipe body 2, the fifth-stage pipe body 322 is inserted into the second-stage pipe body 2, at the moment, the fifth-stage pipe body 322 is located between the outer wall surface of the fourth-stage pipe body 321 and the inner wall surface of the second-stage pipe body 2, the outer diameter of the second-.

Still further, the expanding tube 32 may further include a six-stage tube 323, the six-stage tube 323 is movably sleeved on the five-stage tube 322, the outer diameter of the six-stage tube 323 is larger than that of the five-stage tube 323, after the five-stage tube 322 is inserted into the second-stage tube 2, the six-stage tube 323 is also inserted into the second-stage tube 2, at this time, the six-stage tube 323 is located between the outer wall surface of the five-stage tube 322 and the inner wall surface of the second-stage tube 2, and the outer diameter of the second-stage tube 2 is further expanded to realize expansion.

It should be noted that, in the embodiment, the expanding tube 32 includes the fourth-stage tube 321, the fifth-stage tube 322 and the sixth-stage tube 323 as an example, and the outer diameters of the fourth-stage tube 321, the fifth-stage tube 322 and the sixth-stage tube 323 increase in sequence. Specifically, the outer diameters of the four-stage pipe 321, the five-stage pipe 322 and the six-stage pipe 323 gradually increase by 1-2 mm. Of course, the number of the tubes included in the tube extension member 3 is not limited within the elastic receiving range of the secondary tube 2, that is, the tube extension member 3 may further include a seven-stage tube, an eight-stage tube, and the like.

Preferably, the proximal ends of the third-stage tube 31, the fourth-stage tube 321, the fifth-stage tube 322 and the sixth-stage tube 323 are all provided with a pushing handle 33. When the push handle 33 is used specifically, the overall shape of the push handle 33 is similar to an E shape, the middle part of the push handle is connected with the corresponding tube body, the two ends of the push handle are suspended, and a user can push the corresponding tube body into the second-stage tube body 2 conveniently through the arrangement of the push handle 33. Specifically, in order to improve the discrimination degree in use, the outer wall surface of each pushing handle 33 is engraved with a size mark, for example, the third-stage pipe body 31 is engraved with 12FR, the fourth-stage pipe body 321 is engraved with 14FR, the fifth-stage pipe body 322 is engraved with 16FR, and the sixth-stage pipe body 323 is engraved with 18 FR; in order to avoid damage to the corresponding part, the expansion is gradually and gradually carried out, and a user can push the corresponding pipe body according to the size mark, so that the phenomenon of working errors is effectively reduced.

Preferably, the two end portions of the pushing handle 33 are respectively provided with a transition bevel edge 331, wherein the transition bevel edge 331 at one end is convenient for fixing the corresponding tube when not in use; the other end of the tube body is convenient to fix the corresponding tube body in the using process.

Preferably, because the third-stage pipe body 31, the fourth-stage pipe body 321, the fifth-stage pipe body 322 and the sixth-stage pipe body 323 are structures with one layer wrapped by one layer, the fourth-stage pipe body 321, the fifth-stage pipe body 322 and the sixth-stage pipe body 323 are all provided with the first pushing groove 34, and the first pushing groove 34 is arranged in parallel with the length direction of the first-stage pipe body 12 and is used for providing a movement space for the pushing handle 33 on the corresponding pipe body. In specific application, the sixth-stage pipe 323 is located at the outermost layer, and a movement space needs to be provided for the pushing handles 33 of the third-stage pipe 31, the fourth-stage pipe 321 and the fifth-stage pipe 322, so that three first pushing grooves 34 are formed in the sixth-stage pipe 323; the fifth-stage tube 322 is located at the penultimate layer and needs to provide a movement space for the pushing handle 33 of the third-stage tube 31 and the fourth-stage tube 321, so that two first pushing grooves 34 are formed in the fifth-stage tube; the fourth-stage pipe body 321 is at the last but one layer, and needs to provide a movement space for the pushing handle 33 of the third-stage pipe body 31, so that a first pushing groove 34 is formed in the fourth-stage pipe body; the tertiary pipe 31 is located at the innermost layer, so that the first pushing groove 34 is not required to be provided.

Referring to fig. 9, fig. 9 is a perspective view of the tube body protecting case 5 according to the embodiment. Preferably, the puncture dilator further comprises a tube body protecting shell 5, the tube body protecting shell 5 is located at the near end of the secondary tube body 2, the tube body protecting shell 5 is sleeved on the primary tube body 12, and the tertiary tube body 31, the quaternary tube body 321, the quinary tube body 322 and the quinary tube body 323 are movably arranged in the tube body protecting shell 5; through the setting of body protective housing 5, can protect tertiary body 31, level four body 321, five-stage body 322 and six-stage body 323, prevent to receive foreign object impact or striking to cause the damage, simultaneously, the stability in the reinforcing body use. When the pipe body protecting shell is used specifically, the second pushing groove 51 is formed in the pipe body protecting shell 5, the arrangement direction of the second pushing groove 51 is the same as that of the first pushing groove 34, and the movement space is provided for the pushing handle 33, so that the movement of the pushing handle 33 is facilitated. Specifically, the number of the second push grooves 51 corresponds to the number of the push handles 33, that is, the number of the second push grooves 51 is four. In order to improve the use experience of the puncture dilator and the overall aesthetic property of the puncture dilator, the four second pushing grooves 51 may be disposed around the tube protective housing 5 at equal intervals, and the positions of the first pushing groove 34 and the pushing handle 33 are also disposed correspondingly.

Preferably, the protective tube body housing 5 is further provided with a fixing groove 52, and the fixing groove 52 is located at a distal end of the protective tube body housing 5. During the specific application, the quantity of fixed slot 52 corresponds with the quantity of propelling movement handle 33, and the quantity of fixed slot 52 is four promptly, and the position of each fixed slot 52 corresponds with the position of each propelling movement handle 33, and both are in same water flat line, through the setting of fixed slot 52, can carry out the rigidity to the corresponding body in use, replace artifical manual fixed, reinforcing puncture expander's use convenience.

When the puncture dilator is used, the primary pipe body 1 is firstly inserted into the corresponding position, and then the secondary pipe body 2 is gradually pushed into the position of the primary pipe body 1, at the moment, the corresponding position is expanded, the third-stage pipe body 31 is pushed towards the direction close to the second-stage pipe body 2 by the pushing handle 33, after reaching a certain position, under the action of the transitional inclined edge 331 at one end of the pushing handle 33, one end of the pushing handle 33 slides out of the second pushing groove 51, and with the pushing handle 33 being pushed continuously, one end of the pushing handle 33 is finally buckled in the fixing groove 52 for fixing, the tertiary tube 31 is also combined with the secondary tube 2, the secondary tube 2 is expanded to a certain degree, and then the corresponding part is expanded again, and so on, the four-stage pipe body 321, the five-stage pipe body 322 and the six-stage pipe body 323 are pushed out, the second-stage pipe body 2 is continuously expanded, and finally the corresponding part is expanded to the required degree. After the pipe protecting shell is used, the three-stage pipe body 31, the four-stage pipe body 321, the five-stage pipe body 322 and the six-stage pipe body 323 are respectively pulled out from the fixing groove 52 and pushed to the initial position, and meanwhile, the other end of the pushing handle 33 is more conveniently buckled at the end part of the pipe protecting shell 5 under the action of the transition bevel edge 331.

To sum up, through the one-level body, the cooperation of second grade body and body extension piece is used, the one-level body tentatively expands earlier, further expand through the second grade body, the body extension piece combines with the second grade body, because the elastic action of diode body makes it take place deformation, and then the external diameter of increase second grade body, increase expansion degree, the expansion of going on through this mode, need not to carry out puncture many times, reduce puncture step and time, convenient operation, and can also the risk of greatly reduced in-process blood loss.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A puncture dilator, comprising: the device comprises a primary tube body, a secondary tube body and a tube body expansion piece, wherein the secondary tube body is arranged at the near end of the primary tube body, and the far end of the tube body expansion piece is movably arranged in the diode body; the secondary pipe body is made of elastic materials; and the tube body expansion piece moves in the diode body to realize the expansion of the secondary tube body.

2. The puncture dilator of claim 1, wherein the primary tube comprises a head and a primary tube, the head is disposed at a distal end of the primary tube, the secondary tube is sleeved on the primary tube, and a distal end of the secondary tube abuts a proximal end of the head; the pipe body expansion piece is movably sleeved on the first-stage pipe body.

3. The puncture dilator of claim 2, wherein the angle between the secondary tube and the head is obtuse or straight.

4. The puncture dilator of claim 1, wherein the proximal end of the secondary tube body is provided with a tapered bore.

5. The puncture dilator of claim 2, wherein the tube dilating element comprises a tertiary tube body movably sleeved on the primary tube body.

6. The puncture dilator of claim 5, wherein the tube dilator further comprises a dilating tube movably sleeved to the tertiary tube.

7. The puncture dilator of claim 6, wherein the tertiary tube body and the dilating tube body are each provided with a push handle; the expansion pipe body is provided with a first pushing groove which avoids the pushing handle.

8. The puncture dilator of any one of claims 1 to 7, further comprising a protective sheath of tubing disposed at a proximal end of the secondary tubing, the tubing dilator movably disposed within the protective sheath of tubing.

9. The puncture dilator of claim 8, wherein the protective housing defines a second push slot along which the tube dilator element moves.

10. The puncture dilator of claim 8, wherein the tube protective housing is provided with a fixation groove through which the tube dilator element is fixed.