CN210582762U

CN210582762U - Ejaculatory duct support assembly

Info

Publication number: CN210582762U
Application number: CN201920682611.7U
Authority: CN
Inventors: 王祥卫; 范立新; 武雨琦; 王滨
Original assignee: Shenzhen University; Shenzhen University General Hospital
Current assignee: Shenzhen University; Shenzhen University General Hospital
Priority date: 2019-05-13
Filing date: 2019-05-13
Publication date: 2020-05-22
Anticipated expiration: 2029-05-13

Abstract

The utility model relates to an ejaculatory duct bracket component field discloses construct an ejaculatory duct bracket component, including the tubulose support and can wear the seal wire of establishing in the tubulose support, the radial dimension of tubulose support is 0.8-1.0mm, and two end sections of head and the tail of tubulose support are the curly form under natural state. The ejaculatory duct bracket component can ensure that the tubular bracket can smoothly enter the ejaculatory duct and the seminal vesicle in the operation through the matching of the tubular bracket and the guide wire; the tubular stent is kept in the ejaculatory duct and the seminal vesicle, and the tail end of the tubular stent restores the curled shape, so that the tubular stent plays a role in supporting the ejaculatory duct, keeps the ejaculatory duct smooth, and enables semen to flow in the tubular stent, thereby solving the problem of obstruction of the ejaculatory duct; the coiled shape of the end section of the tubular stent is equivalent to a limiting part, and the tubular stent is prevented from deviating from the seminal vesicle and the ejaculatory duct, so that the tubular stent is prevented from deviating from the seminal vesicle and the ejaculatory duct to cause relapse.

Description

Ejaculatory duct support assembly

Technical Field

The utility model relates to an ejaculatory duct bracket component field.

Background

The urinary vesiculolithospermic technique is increasingly widely applied in clinic, and besides intractable hemospermia, other diseases at the far end of the seminal tract, such as severe and weak obstruction of the ejaculatory duct or azoospermia, seminal tract cysts and the like, can be treated by adopting the method.

Ejaculatory duct obstruction is a sperm discharge obstacle caused by the occurrence of the ejaculatory duct at the far end of the seminal tract, is one of the reasons for male infertility caused by obstructive factors, and is male infertility which can be cured by a few surgical operations. The most common cause of intractable hemospermia can be ejaculatory duct obstruction caused by cyst in the ejaculatory duct area or inflammatory stenosis of an ejaculatory duct opening, inflammation and obstruction can promote calculus formation in the seminal tract, and calculus can aggravate inflammation and obstruction degree, promote each other, are the pathological basis of the intractable hemospermia, and the condition is often poor in conservative treatment effect and needs surgical intervention. The seminal vesicle scope technology is used for exploring, expanding and flushing the far-end seminal tract, can accurately reconstruct the unobstructed far-end of the seminal tract, removes the causes of obstruction or unsmooth obstruction, and has double values of diagnosis and treatment on the obstruction of the far-end seminal tract.

However, complications such as vasoconstriction or secondary obstruction may occur in the long term after the operation, which may cause operation failure and even sterility.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a ejaculatory duct bracket component which can keep the ejaculatory duct unblocked.

The utility model provides a technical scheme that its technical problem adopted is: constructing a ejaculatory duct bracket assembly, which comprises a tubular bracket and a guide wire capable of being arranged in the tubular bracket in a penetrating way, wherein the radial dimension of the tubular bracket is 0.8-1.0mm, and the head and tail end sections of the tubular bracket are curled under a natural state; the ejaculatory duct support assembly further comprises a first state in which a guide wire is arranged in the tubular support in a penetrating mode and the tail section of the tubular support is unfolded, and a second state in which the guide wire is separated from the tubular support and the tail section of the tubular support is curled.

Optionally, at least one of the first and last end sections of the tubular stent is crimped into a circular shape.

Optionally, at least one of the first and last end segments of the tubular stent is crimped into a helix.

Optionally, the radial dimension of the curled shape of the end section does not exceed 2.5 mm;

and/or the developed length of the end section does not exceed 5 mm;

and/or the length of the pipe section between the head section and the tail section of the tubular stent is 15-18 mm;

and/or the total length of the tubular stent in the tail-segment expanded state is 2.2-2.8 cm.

Optionally, the side wall of the end section of the tubular stent is provided with at least one side opening communicating the inside and the outside of the tubular stent.

Optionally, the side openings are hole-shaped.

Alternatively, the side openings are slit-shaped in the direction of the tubular stent.

Optionally, the side opening extends in the direction of the tubular stent to the caudal end opening of the tubular stent.

Optionally, the tubular stent includes an outer tube, an inner tube provided in a distal section of the outer tube, and a plurality of connecting portions connecting an inner side of the outer tube and an outer side of the inner tube, the plurality of connecting portions being distributed along a circumferential direction of the inner tube, at least one side opening being provided in the distal section of the outer tube and each side opening being located between adjacent two of the connecting portions.

Optionally, each connecting portion extends along the inner tube, and the tube wall of the inner tube, the tube wall of the outer tube and each two adjacent connecting portions define a flow guide channel.

Implement the technical scheme of the utility model, following beneficial effect has at least: the ejaculatory duct bracket component can ensure that the tubular bracket can smoothly enter the ejaculatory duct and the seminal vesicle in the operation through the matching of the tubular bracket and the guide wire; the tubular stent is kept in the ejaculatory duct and the seminal vesicle, and the tail end of the tubular stent restores the curled shape, so that the tubular stent plays a role in supporting the ejaculatory duct, keeps the ejaculatory duct smooth, and enables semen to flow in the tubular stent, thereby solving the problem of obstruction of the ejaculatory duct; the coiled shape of the end section of the tubular stent is equivalent to a limiting part, and the tubular stent is prevented from deviating from the seminal vesicle and the ejaculatory duct, so that the tubular stent is prevented from deviating from the seminal vesicle and the ejaculatory duct to cause relapse.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a front view of a tubular stent of an ejaculatory duct stent assembly in an embodiment of the invention.

Fig. 2 is a front view of a tubular stent of the ejaculatory duct stent assembly in another embodiment of the invention.

Fig. 3 is a right side view of the tubular stent of the ejaculatory duct stent assembly of fig. 2.

Fig. 4 is a front view of a ejaculatory duct support assembly according to yet another embodiment of the invention.

Fig. 5 is a schematic structural view of an end section of a tubular stent of the ejaculatory duct stent assembly in an embodiment of the invention.

Fig. 6 is a schematic structural view of an end section of a tubular stent of the ejaculatory duct stent assembly in another embodiment of the invention.

Fig. 7 is a schematic structural view of an end section of a tubular stent of a ejaculatory duct stent assembly in a further embodiment of the invention.

Fig. 8 is an orthographic view of the end nozzle of the tubular stent of fig. 6.

Fig. 9 is a schematic structural view of an end section of a tubular stent of a ejaculatory duct stent assembly in a further embodiment of the invention.

Fig. 10 is a schematic view of the tubular stent of the ejaculatory duct stent assembly in an embodiment of the invention being sleeved over a guidewire and the end being deployed.

The reference numerals in the figures denote: the device comprises a tubular stent 1, an end section 11, a side opening 1a, an outer tube 12, an inner tube 13, a connecting part 14, a flow guide channel 1b, a guide wire 2 and a sleeve 3.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, it is to be understood that the terms "front", "back", "upper", "lower", "left", "right", "longitudinal", "transverse", and the like are used for convenience of describing aspects of the present invention, and do not indicate that the device or component referred to must have a particular orientation, and therefore, should not be construed as limiting the present invention. In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

Referring to fig. 1, the ejaculatory duct support assembly in one embodiment of the present invention comprises a tubular support 1 and a guide wire 2 capable of being inserted into the tubular support 1, wherein the radial dimension of the tubular support 1 is 0.8-1.0mm (corresponding to the specification F2.8-F4), such as 0.8, 0.85, 0.9, 0.95 and 1.0mm, and the tubular support 1 with a suitable size can be adopted for different sizes of ejaculatory ducts of different human bodies. The head and tail end sections 11 of the tubular stent 1 are curled in a natural state; the ejaculatory duct stent assembly comprises a first state (see fig. 1, 2 or 3) in which the guide wire 2 is inserted into the tubular stent 1 and the end section 11 of the tubular stent 1 is deployed, and a second state (see fig. 9) in which the guide wire 2 is separated from the tubular stent 1 and the end section 11 of the tubular stent 1 is crimped, in other words, when the tubular stent 1 is fitted over the guide wire 2, the tubular stent 1 is adapted to the shape of the guide wire 2 due to the support of the guide wire 2, so that the end section 11 is deployed; when the tubular stent 1 is separated from the guidewire 2, the end section 11 of the tubular stent 1 is restored to the crimped shape.

The guide wire 2 is an existing medical appliance, has flexibility and can be bent, and can enter the seminal vesicle through the ejaculatory duct and then play a role in guiding the tubular stent 1 to enter the ejaculatory duct and the seminal vesicle. For example, the guide wire 2 can be a common lumen guide wire 2 used for supporting or guiding in medical treatment, and is usually made of nitinol wire with better flexibility. The guide wire 2 can be realized by the prior art and will not be described in detail herein.

The tubular support 1 is a flexible long tube and is used for being left in the ejaculatory duct and the seminal vesicle finally in an operation to play a role in supporting and guiding the ejaculatory duct, so that the patency of the ejaculatory duct is kept, and the seminal fluid can flow in the tubular support 1.

Further, as for the size of the tubular stent 1, according to the structure of the ejaculatory duct and seminal vesicle of the general human body, referring to fig. 1-4 and 10, the following requirements are generally adopted: radial dimension s of the curled shape of the end section 11₂Not more than 2.5 mm; and/or the developed length of the end segment 11 does not exceed 5 mm; and/or the length s of the tubular section between the two end sections 11 of the tubular stent 1₁15-18 mm; and/or the total length s of the tubular stent 1 in the unfolded state of the end sections 11 is 2.2-2.8 cm.

Referring to fig. 1, the end section 11 of the tubular stent 1 may be crimped into a circular shape; in other embodiments, referring to fig. 2-3, the end segment 11 of the tubular stent 1 may also be crimped into a helical shape. In addition, the tubular stent 1 may be formed by crimping both the end sections 11 end to end in a coil shape (see fig. 1) or in a spiral shape (see fig. 2 to 3), or may be formed by crimping the end section 11 at one end in a coil shape and crimping the end section at the other end in a spiral shape (see fig. 2 to 3). When the end section 11 of the tubular stent 1 is crimped into a spiral shape, the direction in which the spiral develops may be a direction toward the side of the tubular stent 1.

The side wall of the end section 11 of the tubular stent 1 can be provided with at least one side opening 1a communicating the inside and the outside of the tubular stent 1. In some embodiments, referring to fig. 4, the side openings 1a are holes, and the number of the side openings may be one or more, and when the side openings 1a are plural, the holes may be distributed along the circumferential direction of the tubular stent 1 while being distributed along the length direction of the tubular stent 1. In other embodiments, referring to fig. 5, the side opening 1a is slit-shaped in the direction of the tubular stent 1. The side opening 1a extends to the tail end opening of the tubular stent 1 along the direction of the tubular stent 1, and the side opening 1a and the tail end opening of the tubular stent 1 can be connected or disconnected; the number of the slit-shaped side openings 1a may be one or plural, and when the side openings 1a are plural, they may be distributed along the circumferential direction of the tubular stent 1 while being distributed along the longitudinal direction of the tubular stent 1. The side openings 1a prevent the blocking of the tubular stent 1, since some liquid clots or other substances may be present in the seminal vesicle, which may block the caudal end orifice of the tubular stent 1.

Referring to fig. 6 to 8, the tubular stent 1 may further include an outer tube 12, an inner tube 13 provided in the end section 11 of the outer tube 12, and a plurality of connecting portions 14 connecting the inside of the outer tube 12 and the outside of the inner tube 13, the plurality of connecting portions 14 being uniformly distributed along the circumferential direction of the inner tube 13, the at least one side opening 1a being provided in the end section 11 of the outer tube 12 and each side opening 1a being located between adjacent two connecting portions 14. The inner tube 13 can be passed by the guide wire 2, and the connecting part 14 is used for supporting the wall of the outer tube 12, so that the end orifice of the tubular stent 1 is not easy to deform and cause blockage. Each connecting portion 14 is rib-shaped and extends along the inner tube 13 to the tail end opening of the inner tube 13, the tube wall of the outer tube 12 and every two adjacent connecting portions 14 define a flow guide channel 1b communicated with the side opening 1a, and semen can enter the flow guide channel 1b through the tail end orifice and the side opening 1a of the tubular support 1 so as to flow in the tubular support 1. Understandably, in other embodiments, the connecting portion 14 may not extend to the rear opening of the inner tube 13 as long as it is sufficient to support the outer tube 12. When the side opening 1a of the tubular stent 1 is in the above-mentioned hole shape, it can be as shown in fig. 6; when the side opening 1a of the tubular stent 1 is slit-shaped as described above, it can be as shown in FIG. 8.

When the ejaculatory duct bracket component is used, one end of a guide wire 2 extends into a seminal vesicle along an ejaculatory duct and keeps the other end outside a human body, then one end of a tubular bracket 1 is sleeved on the guide wire 2 from the end of the guide wire 2 which is kept outside the human body, the head and tail end sections 11 of the tubular bracket 1 are unfolded due to the adaptation to the shape of the guide wire 2, then the sleeve 4 is sleeved on the guide wire to push the head end of the tubular bracket 1 (see figure 9), so that the tubular bracket 1 is pushed to enter the ejaculatory duct and the seminal vesicle along the guide wire 2, the end section 11 of one end of the tubular bracket 1 enters the seminal vesicle, the end section 11 of the other end is kept outside the human body, finally the guide wire 2 is pulled out of the human body, the tubular bracket 1 is kept in the ejaculatory duct and the seminal vesicle and the head and tail end sections 11 thereof are restored to be curled, the function of supporting the ejaculatory duct is realized, the smoothness of the, thereby solving the obstruction problem of the ejaculatory duct; the curled shape of the end section 11 remaining in the seminal vesicle is equivalent to forming a stopper in the seminal vesicle to prevent the tubular stent 1 from coming out of the body, and the curled shape of the end section 11 in the body is also equivalent to forming a stopper in the seminal vesicle to prevent the tubular stent 1 from moving inwards, thereby preventing the tubular stent 1 from deviating from the seminal vesicle and the ejaculatory duct to cause recurrence. When the tubular stent 1 needs to be taken out of the human body, the tubular stent 1 can be directly pulled out of the human body.

In conclusion, the vasectomy stent assembly can ensure that the tubular stent 1 can smoothly enter the vasectomy and the seminal vesicle in the operation through the matching of the tubular stent 1 and the guide wire 2; the tubular stent 1 is kept in the ejaculatory duct and the seminal vesicle, and the tail section 11 of the tubular stent recovers a curled shape, so that the function of supporting the ejaculatory duct is achieved, the ejaculatory duct is kept smooth, and semen can flow in the tubular stent 1, so that the problem of obstruction of the ejaculatory duct is solved; the curled shape of the end section 11 of the tubular stent 1 corresponds to a stopper portion, which prevents the tubular stent 1 from deviating from the seminal vesicle and the ejaculatory duct, so as to prevent the tubular stent 1 from deviating from the seminal vesicle and the ejaculatory duct to cause recurrence. When the tail end 11 of the tubular stent 1 is curled into a spiral shape, the limiting effect is stronger compared with the circular shape and the large volume, and when the tubular stent 1 is used, the tubular stent 1 with the tail end 11 curled into the circular shape or the spiral shape can be determined according to the conditions of the vas deferens and the seminal vesicle of a human body.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, which may be modified, combined, and varied by those skilled in the art. Any modification, equivalent replacement, or improvement 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. The ejaculatory duct bracket assembly is characterized by comprising a tubular bracket (1) and a guide wire which can be penetrated in the tubular bracket (1), wherein the radial dimension of the tubular bracket (1) is 0.8-1.0mm, and the head and tail end sections (11) of the tubular bracket (1) are curled in a natural state; the ejaculatory duct support assembly further comprises a first state that the guide wire is arranged in the tubular support (1) in a penetrating mode and enables the tail section (11) of the tubular support (1) to be unfolded, and a second state that the guide wire is separated from the tubular support (1) and the tail section (11) of the tubular support (1) returns to be curled.

2. The ejaculatory duct stent assembly according to claim 1, characterized in that at least one of the two end sections (11) of the tubular stent (1) is crimped into a circle.

3. The ejaculatory duct stent assembly according to claim 1, characterized in that at least one of the two end sections (11) of the tubular stent (1) is crimped into a spiral.

4. The ejaculatory duct support assembly according to claim 1, characterized in that the radial dimension of the coiled shape of the end section (11) does not exceed 2.5 mm;

and/or the developed length of the end segment (11) does not exceed 5 mm;

and/or the length of the pipe section between the head and tail end sections (11) of the tubular stent (1) is 15-18 mm;

and/or the total length of the tubular stent (1) in the unfolded state of the end section (11) is 2.2-2.8 cm.

5. The ejaculatory duct support assembly according to claim 1, characterized in that the side wall of the end section (11) of the tubular support (1) is provided with at least one side opening (1a) communicating the inside and the outside of the tubular support (1).

6. The ejaculatory duct support assembly according to claim 5, characterized in that the side opening (1a) is hole-shaped.

7. The ejaculatory duct support assembly according to claim 5, characterized in that the side opening (1a) is slit-shaped in the direction of the tubular support (1).

8. The ejaculatory duct support assembly according to claim 7, characterized in that the side opening (1a) extends in the direction of the tubular support (1) to a caudal opening of the tubular support (1).

9. The ejaculatory duct support assembly according to any one of claims 5-8, characterized in that the tubular support (1) comprises an outer tube (12), an inner tube (13) arranged in an end section (11) of the outer tube (12) and a plurality of connection parts (14) connecting the inner side of the outer tube (12) and the outer side of the inner tube (13), the plurality of connection parts (14) being distributed along the circumference of the inner tube (13), at least one side opening (1a) being arranged in the end section (11) of the outer tube (12) and each side opening (1a) being located between two adjacent connection parts (14).

10. The ejaculatory duct support assembly according to claim 9, characterized in that each connection (14) extends along the inner tube (13), the wall of the outer tube (12) and each adjacent two connections (14) defining a flow guiding channel (1 b).