CN214805702U

CN214805702U - Temporary prostate implanting bracket

Info

Publication number: CN214805702U
Application number: CN202023161210.9U
Authority: CN
Inventors: 王艳红; 吴儒全
Original assignee: Shenzhen Yuanwei Medical Technology Co ltd
Current assignee: Shenzhen Yuanwei Medical Technology Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-11-23
Anticipated expiration: 2030-12-23

Abstract

The utility model discloses a support is implanted to interim prostate is applied to the prostatic urethra, and wherein, support is implanted to interim prostate includes: the elastic support components are in a strutting state, and the elastic support components are abutted against the inner wall of the prostatic urethra so as to strut the prostatic urethra; the elastic support assembly comprises a first elastic wire and a second elastic wire, and the first elastic wire and the second elastic wire are mutually wound; and a protector disposed at an end of the plurality of elastic support members facing the bladder. The problem of memory alloy support among the prior art's structural strength is not high, can not be stable strut the prostate urethra, influence patient's treatment is solved.

Description

Temporary prostate implanting bracket

Technical Field

The utility model relates to a prostate medical equipment technical field especially relates to a support is implanted to interim prostate.

Background

Benign Prostatic Hyperplasia (BPH) is one of the common diseases in middle-aged and elderly men, and the incidence of the disease is increasing with the aging of the global population. The incidence of benign prostatic hyperplasia increases with age, but with proliferative lesions there are not necessarily clinical symptoms. The incidence of diseases in cities and towns is higher than that in villages, and the ethnic difference also influences the proliferation degree. The pathogenesis of benign prostatic hyperplasia is well studied, but the cause of this disease has not yet been elucidated. Other relevant factors may be due to a disruption in the balance of epithelial and mesenchymal cell proliferation and apoptosis: androgens and their interactions with estrogens, prostate interstitium and glandular epithelial cell interactions, growth factors, inflammatory cells, neurotransmitters and genetic factors, among others. It is now known that benign prostatic hyperplasia must have both a functional testicle and an aging condition. In recent years attention has also been paid to the association of smoking, obesity and alcohol abuse, family history, race and geographical environment with the occurrence of BPH.

The existing methods for treating prostatic hyperplasia include various methods, such as drug therapy, surgical therapy, laser minimally invasive therapy, and stent-graft (Stents) therapy. The current method of treating the prostate by using a stent (Stents) is to use a memory alloy stent, and the connecting part arranged on the stent is connected with the inner wall of the prostate during the expansion process of the stent. The stent has the problem of relative displacement when being placed in a human body for a long time. The existing memory alloy stent is made of a single memory alloy wire, and when the single memory alloy wire is used for expanding and supporting the prostatic urethra, the prostatic urethra cannot be stably expanded due to low structural strength, so that the treatment effect of a patient is influenced.

Accordingly, the prior art is yet to be improved and developed.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned prior art not enough, the utility model aims to provide a support is implanted to interim prostate, the structural strength who has solved the memory alloy support among the prior art is not high, can not be stable strut the prostate urethra, influences patient's treatment.

The technical scheme of the utility model as follows:

a temporary prostate implant stent for application to the prostatic urethra, wherein the temporary prostate implant stent comprises:

the elastic support components abut against the inner wall of the prostatic urethra to prop open the prostatic urethra when the elastic support components are in a propping state;

the elastic support assembly comprises a first elastic wire and a second elastic wire, and the first elastic wire and the second elastic wire are mutually wound.

Further, the temporary prostate implant stent further comprises:

the tail end portion of restrainting, the tail end portion of restrainting is located a plurality of elastic support component's one end, and is a plurality of elastic support component follows the edge of tail end portion of restrainting is the circumference and evenly sets up.

Further, the elastic support assembly includes: the tail end connecting part, the groove part, the bulge part and the head end connecting part are sequentially arranged from back to front;

the bulge part protrudes towards the direction far away from the axis of the tail end bundling part;

the recessed portion is recessed toward a direction close to an axis of the tail end bunching portion.

Furthermore, in the adjacent elastic support assemblies, the first elastic wire of one of the elastic support assemblies is connected with the second elastic wire of the other elastic support assembly.

Further, the temporary prostate implant stent further comprises: a protector disposed at an end of the plurality of elastic support members facing the bladder;

the elastic support component is provided with 5.

Further, the temporary prostate implant stent further comprises:

the one end of anticreep piece is connected the elastic support subassembly, the anticreep piece is kept away from the one end of elastic support subassembly supports on the inner wall of prostate urethra, the inner wall of prostate urethra passes through the anticreep piece is kept away from the extrusion of the one end of elastic support subassembly and takes place elastic deformation.

Further, the coming-off preventing member includes:

the third elastic wire and the fourth elastic wire are mutually wound, one ends, far away from the elastic supporting components, of the third elastic wire and the fourth elastic wire are mutually connected to form an elastic ring, and the elastic ring faces towards the inner wall of the prostatic urethra.

Further, the anti-dropping part is a 316L stainless steel anti-dropping part.

Further, the temporary prostate implant stent further comprises:

a retrieval line connected to an end of the tail end bunching portion distal to the bladder, the retrieval line disposed outwardly extending along the prostatic urethra;

the pushing outer pipe is sleeved on the recovery line.

Further, the first elastic wire and the second elastic wire are both nickel titanium wires.

The beneficial effect of this scheme: the utility model provides a support is implanted to interim prostate, through general in the elastic support subassembly first elastic wire with second elastic wire intertwine makes the structural strength of elastic support subassembly increase, and when the elastic support subassembly was in the state of strutting, the bearing structure that a plurality of elastic support subassemblies are constituteed had stronger holding power and structural stability, can not receive the extrusion of the inner wall of prostate urethra easily and warp and lead to propping open the prostate urethra. And adopt this elastic support subassembly can keep bearing structure's support stability after strutting the prostate urethra, reinforcing patient's treatment. Meanwhile, the plurality of elastic supporting assemblies can be concentrated through the protecting piece at the front end, so that a supporting structure formed by the plurality of elastic supporting assemblies is provided with a supporting point at the head end, the structural strength of the supporting structure is further increased, and the stability is enhanced.

Drawings

Fig. 1 is a schematic structural view of an embodiment of a temporary prostate implant stent of the present invention;

fig. 2 is a schematic structural view of an elastic support assembly of an embodiment of a temporary prostate implant stent of the present invention;

fig. 3 is a left side view of an embodiment of a temporary prostate implant stent of the present invention;

fig. 4 is a top view of an embodiment of a temporary prostate implant stent of the present invention.

The reference numbers in the figures: 100. the prostatic urethra; 110. the bladder; 200. an elastic support member; 210. A first elastic wire; 220. a second elastic wire; 230. a tail end connecting part; 240. a groove part; 250. A boss portion; 260. a head end connecting part; 300. a protective member; 400. a tail end bundling part; 500. A drop-off prevention member; 510. a third elastic wire; 520. a fourth elastic wire; 530. an elastic ring; 600. Recovering the wire; 610. and pushing the outer pipe.

Detailed Description

The utility model provides a support is implanted to interim prostate, for making the utility model discloses a purpose, technical scheme and effect are clearer, clear and definite, and it is right that the following refers to the attached drawing and the embodiment is lifted the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

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

It should be further noted that the same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc., indicating directions or positional relationships based on those shown in the drawings, it is only for convenience of description and simplicity of description, but not for indicating or implying that the indicated device or element must have a specific direction, be constructed in a specific direction, and operate, and therefore, the terms describing the positional relationships in the drawings are used only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the above terms according to specific situations.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

As shown in fig. 1, the present invention provides a temporary prostate implant stent, which is applied to the prostatic urethra 100, wherein, as shown in fig. 1 and 2, the temporary prostate implant stent comprises: a plurality of elastic support members 200, and a protector 300. For the convenience of structural description, the temporary prostate implant stent is placed into the prostatic urethra 100 from the front end thereof, and the temporary prostate implant stent is placed into the prostatic urethra 100 from the rear end thereof, so that the bladder 110 is located in front of the prostatic urethra 100. The plurality of elastic support members 200 are driven to switch between a compressed state and an expanded state, and when the plurality of temporary prostatic implant stents are advanced to the position of the prostatic urethra 100 to be treated, the plurality of elastic support members 200 are in the expanded state. The elastic support assembly now bears against the inner wall of the prostatic urethra 100 to distract the prostatic urethra 100. The elastic support assembly 200 includes a first elastic wire 210 and a second elastic wire 220, the first elastic wire 210 and the second elastic wire 220 are wound around each other, and the support strength of the elastic support assembly 200 is enhanced by the first elastic wire 210 and the second elastic wire 220 wound around each other. As shown in FIG. 3, the protector 300 is provided at one end of the plurality of elastic support members 200 facing the bladder 110, and the protector 300 has a cylindrical structure with a hemispherical front end. The elastic supporting component 200 extends into the bladder 110 along the prostatic urethra 100 towards the bladder 110, and forms a contractible structure matched with the shape of the inner cavity of the prostatic urethra 100 after being bent and returns to the entrance of the prostatic urethra 100 towards the bladder 110; thereby supporting the lumen of prostatic urethra 100 by expanding the expanded resilient support member 200.

In the above scheme, the utility model provides a support is implanted to interim prostate, through will in the elastic support subassembly 200 first elastic wire 210 with second elastic wire 220 intertwine makes the structural strength of elastic support subassembly 200 increase, and when elastic support subassembly 200 was in the state of strutting, the bearing structure that a plurality of elastic support subassemblies 200 are constituteed had stronger holding power and structural stability, can not receive the extrusion of the inner wall of prostatic urethra 100 easily and warp and lead to not propping open prostatic urethra 100. Moreover, the elastic supporting component 200 can keep the supporting stability of the supporting structure after the prostate urethra 100 is propped open, and the treatment effect of the patient is enhanced. Meanwhile, the plurality of elastic support assemblies 200 can be concentrated by the protection member 300 at the front end, so that the support structure formed by the plurality of elastic support assemblies 200 has a support point at the front end, the structural strength of the support structure is further increased, and the stability is enhanced.

The first elastic wire 210 and the second elastic wire 220 are both nickel titanium wires, and the protector 300 is a soft protector for preventing the first elastic wire 210 and the second elastic wire 220 from scratching the inner wall of the prostatic urethra 100.

As shown in fig. 3, in the specific structure of this embodiment, the temporary prostate implant stent further includes a tail end bundling part 400. The tail end bundling part 400 is made of PC or HDPE materials, the outline of the tail end bundling part 400 is circular, and thus the central axis of the tail end bundling part 400 is arranged along the front-back direction. The tail end bundling part 400 is located at the other end of the elastic support members 200 far away from the protecting member 300, i.e. the rear end of the elastic support members 200, and the elastic support members 200 are uniformly arranged along the edge of the tail end bundling part 400. As shown in fig. 4, the elastic support members 200 in this embodiment are provided with 5, and the 5 elastic support members 200 are uniformly distributed on the front surface of the tail end bundling part 400. The 5 elastic support assemblies 200 support the circumferential array distribution to form a support structure with a stable structure, are applied to the prostate urethra 100 and have good support stability, are good in stability in long-term use and are not easy to deform due to extrusion of the prostate urethra 100, and are helpful for recovery of patients.

As shown in fig. 3, the elastic supporting component 200 is divided into several segments when expanded, wherein the segments specifically include: tail end connection portion 230, groove portion 240, boss portion 250, and head end connection portion 260. The trailing end connecting portion 230, the groove portion 240, the protruding portion 250, and the leading end connecting portion 260 are arranged in this order in a direction from the trailing end bunching portion 400 to the protector 300, that is, in a rear-to-front direction, and the direction from the trailing end bunching portion 400 to the protector 300 is an axial direction of the trailing end bunching portion 400. The tail end connecting portion 230 is arc-shaped, one end of the tail end connecting portion 230 is connected to the tail end bundling portion 400, and the other end is connected to the groove portion 240. The groove portion 240 has an arc shape, and the groove portion 240 is recessed toward a direction near a line connecting the tail end bundling portion 400 to the protector 300. The other end of the groove portion 240 is connected to a protrusion portion 250. The protrusion 250 has an arc shape, and the protrusion 250 protrudes away from the line connecting the rear end bundling portion 400 to the protector 300. The head end connection portion 260 has an arc shape, one end of the head end connection portion 260 is connected to the protrusion portion 250, and the other end of the head end connection portion 260 is connected to the protector 300. When the expanded elastic support member 200 is located in the prostatic urethra 100, the inner wall of the prostatic urethra 100 is pressed by the protrusion portion 250, and the position of the inner wall of the prostatic urethra 100 in the groove portion 240 is convexly deformed toward the recess of the groove portion 240. This enlarges the inner wall of prostatic urethra 100 by protrusion 250, and recess 240 accommodates the convex deformation of the inner wall of prostatic urethra 100, thereby allowing the inner wall of prostatic urethra 100 to act as a fixation for elastic support assembly 200 and the temporary prostatic stent to be stabilized in a predetermined position.

As shown in fig. 4, the temporary prostate implant stent of this embodiment further includes a release preventing member 500, one end of the release preventing member 500 is connected to the elastic support member 200, one end of the release preventing member 500 away from the elastic support member 200 is supported on the inner wall of the prostatic urethra 100, and the inner wall of the prostatic urethra 100 is elastically deformed by pressing one end of the release preventing member 500 away from the elastic support member 200. The release preventing member 500 is a 316L stainless steel release preventing member 500. After the inner wall of the prostatic urethra 100 is squeezed by the anti-release member 500, the convex part of the inner wall of the prostatic urethra 100 after elastic deformation abuts against the front end of the anti-release member 500, so that the anti-release member 500 is limited, and the anti-release member 500 cannot move easily. The anti-drop part 500 solves the problem that the prostate stent in the prior art cannot prevent the prostate stent from being easily affected by external force so as to cause position deviation towards one side of the bladder 110 with the large opening of the prostate urethra 100, and avoids the problem that the prostate stent deviates from a preset position and cannot solve the problem of prostatic hypertrophy, even the problem that the prostate stent falls into the bladder 110 to cause great pain to a patient.

As shown in fig. 4, the specific structure of the anti-slip member 500 includes: the third elastic wire 510 and the fourth elastic wire 520 are wound with each other, the wound rear ends of the third elastic wire 510 and the fourth elastic wire 520 are connected to the elastic support assembly 200 or the tail end bundling part 400, one ends of the third elastic wire 510 and the fourth elastic wire 520, which are far away from the elastic support assembly 200, are connected with each other to form an elastic ring 530, and the elastic ring 530 faces the inner wall of the prostatic urethra 100.

Set up intertwine's third elastic wire 510 and fourth elastic wire 520 on anti-disengaging piece 500 to make anti-disengaging piece 500's structure obtain strengthening, when anti-disengaging piece 500 extrudes the urethra inner chamber, make the urethra inner chamber produce bigger deformation, thereby carry out more stable fixed to anti-disengaging piece 500. The elastic ring 530 at the front end can increase the compression range of the prostatic urethra 100, thereby creating a wider range of protrusion positions, so that the separation preventing member 500 can abut against the inner wall of the prostatic urethra 100 at the protrusion positions, thus forming a limit protrusion structure for preventing the elastic supporting member 200 from being displaced.

As shown in fig. 1, the temporary prostate implant stent further includes: a retrieval line 600 and a pusher outer tube 610. The recovery wire 600 is connected to an end of the tail end bunching part 400 far away from the bladder 110, that is, the recovery wire 600 is connected to a rear end of the tail end bunching part 400, and the recovery wire 600 extends along the prostatic urethra 100 and is disposed outwards. The recovery thread 600 uses medical fiber/nylon filament with high tensile strength. The pushing outer tube 610 is sleeved on the recycling line 600, the pushing outer tube 610 is used for pushing the tail end bundling part 400, so that the elastic supporting component 200 and the anti-falling part 500 are pushed into the prostatic urethra 100, and the pushing outer tube 610 is made of pebax materials.

The process of implanting the temporary prostate implant stent comprises the following steps: the method comprises the following steps of firstly, positioning by adopting a rigid cystoscope through a urethra. The elastic supporting component, the protecting component and the anti-dropping component are contracted into 14Fr specification for introduction and are pushed into the prostatic urethra through a cystoscope sheath. When the prostate implant stent is delivered into the filled bladder, the operator perceives that the friction with the inner surface of the push outer tube is reduced. The pushed outer tube around the recovery wire is then removed. The cystoscope is then replaced so that the elastic support assembly, the protector and the anti-slip element are placed at the neck of the bladder (where the prostate urethra meets the bladder) and under visualization. The anti-dropping piece is arranged at the 6 o' clock position for stabilization.

The process of the temporary prostate implant stent being removed is: after 5 days of implantation, the device should be removed by two different methods, respectively method one: under anesthesia with a rigid cystoscope, a retrieval line anchored at the urethral exit is inserted into the cystoscope sheath by means of a SNARE (urethral retrieval) device. The cystoscope is then inserted into the prostatic urethra, and the device is enclosed within a sheath under direct visualization. The second method comprises the following steps: the removal technology only needs local anesthesia and can be carried out under the condition of no bed. The retrieval line was pulled into a 20-22Fr open catheter with SNARE. The catheter is then pushed into the prostatic urethra and the retrieval line is simultaneously pulled. When the catheter reaches the tail end bundling part, the operator pulls the recovery wire into the catheter cavity and moves out of the urethra along with the catheter cavity.

In another first embodiment, in the adjacent elastic support assemblies, the first elastic wire of one of the elastic support assemblies is connected with the second elastic wire of the other elastic support assembly. Therefore, the elastic wires are connected into a whole, so that the elastic wires can bear force and support each other. Further enhancing the structural strength. The mode can adopt the mode that the front end is provided with a protection piece, and can also carry out independent support without the protection piece.

In another second embodiment, the first elastic wire and the second elastic wire in the elastic support assemblies are arranged side by side without being wound, and the first elastic wire of one of the elastic support assemblies is connected with the second elastic wire of the other of the elastic support assemblies in the adjacent elastic support assemblies.

To sum up, the utility model provides a support is implanted to interim prostate, through will among the elastic support subassembly first elastic wire with the elastic wire intertwine of second makes the structural strength of elastic support subassembly increase, and when the elastic support subassembly was in the state of strutting, the bearing structure that a plurality of elastic support subassemblies are constituteed had stronger holding power and structural stability, can not receive the extrusion of the inner wall of prostate urethra easily and warp and lead to not strutting the prostate urethra. And adopt this elastic support subassembly can keep bearing structure's support stability after strutting the prostate urethra, reinforcing patient's treatment. Meanwhile, the plurality of elastic supporting assemblies can be concentrated through the protecting piece at the front end, so that a supporting structure formed by the plurality of elastic supporting assemblies is provided with a supporting point at the head end, the structural strength of the supporting structure is further increased, and the stability is enhanced.

It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.

Claims

1. A temporary prostate implant stent for application to the prostatic urethra, the temporary prostate implant stent comprising:

2. The temporary prostate implant scaffold according to claim 1, further comprising:

3. The temporary prostate implant stent of claim 2, wherein the resilient support assembly comprises: the tail end connecting part, the groove part, the bulge part and the head end connecting part are sequentially arranged from back to front;

4. The temporary prostate implant stent of claim 1, wherein a first spring wire of one of the adjacent spring support members is connected to a second spring wire of the other spring support member.

5. The temporary prostate implant scaffold according to claim 1, further comprising: a protector disposed at an end of the plurality of elastic support members facing the bladder;

the elastic support component is provided with 5.

6. The temporary prostate implant stent of claim 1, further comprising:

7. A temporary prostate implant stent according to claim 6, wherein said anti-slip means comprises:

8. The temporary prostate implant stent of claim 7, wherein the release resistant member is a 316L stainless steel release resistant member.

9. The temporary prostate implant scaffold according to claim 2, further comprising:

the pushing outer pipe is sleeved on the recovery line.

10. The temporary prostate implant stent of claim 1, wherein the first and second elastic wires are both nickel titanium wires.