CN216824453U - Recoverable temporary interventional instrument - Google Patents

Abstract

The utility model provides a recoverable interim intervention apparatus, it includes pipe network support and fixed head end, and pipe network support has the annular pipe network that a plurality of graticule mesh unit annular array connect and form, the first end of annular pipe network has the annular waveform uncovered of axial undulation, annular waveform uncovered has along the undulant crest of axial, the crest includes 1 first crest and a plurality of second crest, the crest top of a plurality of second crests is located the second circumference, the crest top of first crest is located the first circumference; the diameter of the first circumference is larger than that of the second circumference, and the axial distance between the first circumference and the fixed head end is smaller than that between the second circumference and the fixed head end; the second end of the pipe network support is connected in the fixed head end in a converging mode. The utility model discloses an intervene apparatus and can produce vertical holding power in urethra inner wall tissue after putting into the human body through minimal access surgery to alleviate urethra shrink, have good moulding effect of prostate portion urethra.

Description

Recoverable temporary interventional instrument

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to recoverable interim intervention apparatus.

Background

Benign Prostatic Hyperplasia (BPH) is a condition that is commonly observed in elderly men as abnormal but non-malignant (non-cancerous) growth of the prostate gland, leading to lower urinary tract symptoms such as impaired urination, and is an aging condition. BPH is a chronic condition and is associated with the development of obstruction of urinary outflow in the prostatic urethra. It also causes a range of diseases, collectively known as Lower Urinary Tract Symptoms (LUTS), including sexual dysfunction, urinary frequency, difficulty urinating, urinary retention, urinary leakage, and urinary and bladder infections, which worsen with abnormal growth and progression in the prostate.

The incidence and symptoms of BPH are greatly different due to the basic statistical characteristics and the different races of people brought into various countries. The worldwide incidence rate of BPH in 51-60 year old men is 41%, the incidence rate of BPH in 61-70 year old men is 70%, and the incidence rate of BPH in 81-90 year old men is up to 90% and is in an increasing trend. In China, the prevalence rate of BPH is about 50 percent of 50-year-old men, about 60 percent of 60 years old and 90 percent of people above 70 years old, and according to the morbidity suggested by the current epidemiology, 1 hundred million people in China are known to be suffering from BPH. The guidelines for the diagnosis and treatment of benign prostatic hyperplasia state that treatment of BPH includes observation, medication and surgery. The therapeutic objectives are to alleviate symptoms, improve quality of life, delay disease progression and prevent complications from occurring.

The drugs for treating BPH are mainly divided into two main classes of alpha-receptor blockers (tamsulosin) and 5 alpha-reductase inhibitors (finasteride tablets), and account for about 90 percent of the drug market for treating prostatic hyperplasia. Alpha-blockers are the most common drugs prescribed for BPH. They counteract the dynamic component of urinary outflow obstruction by relaxing the smooth muscle in the bladder neck, prostate capsule and prostatic urethra. The 5-alpha-reductase inhibitor inhibits the conversion of testosterone to low dihydrotestosterone levels, inhibits prostatic hyperplasia, reduces the volume of the hyperplastic prostate gland, and ameliorates symptoms primarily by competitively and selectively inhibiting 5 alpha-reductase activity. Drug therapy also exhibits irreversible side effects such as headache, dizziness, nausea, erectile dysfunction, ejaculatory dysfunction, decreased libido, heart failure, dementia, and the like. Poor medication compliance is also caused by the presence of its side effects, resulting in a medication failure rate of up to 30% in two years. However, the operation is usually performed after complications such as acute urinary retention, secondary hydronephrosis, bladder calculus, repeated occurrence of macroscopic hematuria, repeated urinary system infection and the like, but the operation is invasive, needs hospitalization and long-time insertion of a urinary catheter, and causes postoperative infection, hyposexuality of a patient and loss of reproductive function. Prostatic Urethra Lift (PUL) is a non-surgical treatment to alleviate the symptoms of prostatic hyperplasia and has been recommended by AUA group C, i.e. to improve the urinary flow path by implantation of a permanent implant, but there are reports of studies indicating that this approach is at a very high risk of secondary surgical removal of permanent implants.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model aims at providing a recoverable interim intervention apparatus, this interim intervention apparatus can be used for alleviating prostatic hyperplasia and cause lower urinary tract obstruction, and establish urethra route, it has the netted posture device of pipe that can get into the fretwork of prostate portion through the urethra, make it insert to prostate portion through not having the wound, and expand and keep somewhere a period in prostate portion urethra after the release, the support produces vertical holding power in the urethra inner wall tissue on every side, in order to alleviate urethra shrink, later after a period of time, thereby take out the device from the urethra and be used for treating BPH relevant symptom, reduce patient's misery, and can not bring the sequelae, especially relate to the harm of reproductive function and sexual function. The utility model aims at realizing through the following technical scheme:

the utility model provides a recoverable interim intervention apparatus, it includes pipe network support and fixed head end, pipe network support has and is connected by a plurality of graticule mesh unit annular arrays and forms annular pipe network, the first end of annular pipe network has the annular waveform uncovered of axial undulation, annular waveform uncovered has along the crest of axial fluctuation, the crest includes 1 first crest and a plurality of second crest, the crest top of a plurality of second crests is located the second circumference, the crest top of first crest is located the first circumference; the diameter of the first circumference is larger than that of the second circumference, and the axial distance between the first circumference and the fixed head end is smaller than that between the second circumference and the fixed head end; and the second end of the ring-shaped pipe network is connected in the fixed head end in a converging manner. Through such design make first crest axial extension's length far shorter than second crest axial extension length, first crest forms the outward expansion of the structure of spending from the pipe network support body simultaneously for it can play supplementary firm effect when supporting.

Further, the grid unit has a peak portion and a valley portion, the peak portion forms an open peak of the annular pipe network, and a valley bottom of the valley portion converges in the fixed head end; the peak parts and the valley parts are arranged in a butt joint mode through the openings, and the peak parts and the valley parts are connected into a closed grid unit through connecting rods connected to the two sides of the openings; a plurality of graticule mesh units are circular array and form the annular pipe network, and two adjacent graticule mesh units share a connecting rod, including 1 first graticule mesh unit and a plurality of second graticule mesh unit in a plurality of graticule mesh units, the peak of first graticule mesh unit forms the first crest of annular pipe network, the peak of second graticule mesh unit forms the second crest of annular pipe network. Preferably, the plurality of links forming the endless network of pipes extend axially in parallel. When acting on this pipe net shape support at treatment position, because of the cyclic annular pipe network that a plurality of graticule mesh unit circumferential direction connect formed, the uncovered adaptation urethra inner wall size of its annular wave form can circumferentially support the urethra inner wall in bladder neck prostate department, the connecting rod of graticule mesh unit still can provide longitudinal support along urethra inside wall longitudinal extension, the outer end of the first crest of expenditure on the cyclic annular pipe network body supports the top and supports on prostate portion urethra inner wall, plays the fixed action.

Further, two second mesh units located at bilaterally symmetrical positions of the first mesh unit have the same structure and size as mirror images. Preferably, the annular wave-shaped opening of the annular pipe network is connected through odd number of wave crests, the total number of the preferred wave crests is 3, 5 or 7, and the like, when the pipe network bracket structure acts on a treatment part, the first wave crest and the peak valley connecting the wave crests abut against the middle lobe of the prostate, and the second wave crest forms an isosceles shape during shaping and is respectively supported on the left and right side lobes of the prostate at the neck of the bladder to expand the urethral passage.

Preferably, the tubular mesh stent comprises at least 4 second grid elements, i.e. 5 peaks are formed at the annular wave-shaped opening.

Preferably, the grid cells have a spatial hexagonal structure.

Further, the hollow pipe-net-shaped bracket device is formed by engraving a micro pipe by laser and is obtained by heat treatment and shaping, wherein the micro pipe comprises a nickel-titanium alloy micro pipe or a copper alloy micro pipe.

Further, still include and retrieve guiding mechanism, retrieve guiding mechanism including retrieving the wire, retrieve the wire and follow fixed head end to keeping away from the direction axial extension of pipe network support. When the pipe-net type device is implanted into the prostatic urethra, the recovery conducting wire extends along the urethra and out of the genitals, and is preferably made of a biomedical high polymer material.

The beneficial effects of the utility model reside in that:

(1) the utility model discloses to intervene and not have implantation product and can produce vertical holding power in urethra inner wall tissue after putting into the human body through minimal access surgery to alleviate urethra shrink, the moulding effect of prostate portion urethra takes out it after a period of time is alleviated as the symptom. The traditional Chinese medicine composition can be used for treating BPH related symptoms in day operations or outpatients, improving the quality of life, reducing the pain of patients, avoiding sequelae such as sexual function and reproductive function damage, striving for time for patients with the need of reserving the sexual function and the reproductive function, avoiding implant retention and not influencing secondary intervention in the disease development period;

(2) the first wave crest of the special structure which is propped against the inner wall of the prostatic urethra is arranged outside the main body support, so that the hollow pipe net support can be effectively prevented from migrating into the bladder of a patient during the placement period, and the safety and the reliability of the use process are guaranteed;

(3) the hollow-out tube-mesh-shaped bracket of the utility model is formed by connecting grid unit annular arrays, has stronger circumferential supporting force, strengthens the urethral shaping effect of the prostate part during short-term implantation, and reduces the implantation time; because the prostatic urethra lifting implant has certain probability side effects in vivo, such as certain pain and burning sensation during urination and hematuria and urgency of urination, the duration of the side effects is reduced by improving the supporting force, and the experience of a patient is optimized;

(4) the utility model discloses a pipe network support of fretwork has the recovery guide mechanism that extends at fixed head end department, follows the recovery wire that fixed head end extended promptly, works as intervention apparatus retrieve the wire and extend along the urethra when implanting prostate urethra portion to outside the genitals, after a period of time is alleviated as the symptom after implanting, retrieve the auxiliary catheter and insert to prostate urethra portion along the wire and carry out pipe network support and retrieve and take out.

Drawings

FIG. 1 is a schematic diagram of a preferred embodiment of the present invention;

in the figure:

100-recycling the wire; 301-first peak; 311-peak portions;

200-a fixed head end; 302-second peak; 312-valley;

300-tube mesh stent; 310-a grid element; 313-connecting rod.

Detailed Description

The technical solutions of the preferred embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments.

The present embodiment provides a recyclable temporary interventional instrument, which comprises a tubular mesh stent 300, a fixed head end 200 and a recycling guide mechanism, wherein the tubular mesh stent has a plurality of grid units 310, the plurality of grid units 310 are connected in an annular array to form an annular tubular mesh, as shown in fig. 1, a first end of the annular tubular mesh has an annular undulating opening with axially undulating peaks, the peaks include 1 first peak 301 and a plurality of second peaks 302, peaks of the plurality of second peaks are located on a second circumference, and peaks of the first peaks are located on a first circumference; the diameter of the first circumference is larger than that of the second circumference, and the axial distance between the first circumference and the fixed head end is smaller than that between the second circumference and the fixed head end; the second end of the pipe network support is connected in the fixed head end in a converging mode. The recovery guide mechanism comprises a recovery guide wire 100, the recovery guide wire 100 axially extends from the fixed head end to the direction far away from the tube mesh stent, when the tube mesh stent is implanted to the prostatic urethra part, the recovery guide wire extends along the urethra and extends to the outside of the genitals, and the recovery guide wire is preferably made of a biomedical high polymer material. When the pipe-net type device is implanted into the prostatic urethra, the recovery conducting wire extends along the urethra and out of the genitals, and is preferably made of a biomedical high polymer material. Through such design make first crest axial extension's length far shorter than second crest axial extension length, first crest forms the outward expansion of the overhead side of pipe network support body structure of spending simultaneously for it can play supplementary firm effect when supporting.

In the illustrated embodiment, the grid unit 310 is in a structure similar to a space hexagon, as shown in fig. 1, the grid unit 310 has peaks 311 and valleys 312 which are oppositely opened, the peaks 311 are the open peaks forming the annular pipe network, and the valleys 312 are converged in the fixed head 200; the peak part 311 and the valley part 312 are connected into a closed grid unit 310 through connecting rods 313 connected to the two sides of the opening; the plurality of grid units 310 are arranged in a circular array to form an annular pipe network, two adjacent grid units 310 share one connecting rod 313, and the plurality of connecting rods 313 forming the annular pipe network axially extend in parallel; the grid units comprise 1 first grid unit and an even number of second grid units, the peak of the first grid unit forms a first peak 301 of the annular pipe network, and the peak of the second grid unit forms a second peak 302 of the annular pipe network.

When using this pipe network support, pipe network support 300 is pressed and is held the back and send into target position back strut, when acting on this pipe network support at treatment position, because of the cyclic annular pipe network of a plurality of graticule mesh unit circumferential connection formation, the uncovered adaptation urethra inner wall size of its annular wave form, can circumferentially support the urethra inner wall at bladder neck prostate department, connecting rod 313 and open cyclic annular wave form still can provide longitudinal support along urethra inner wall longitudinal extension, the outer end of the first crest 301 of expenditure on the cyclic annular pipe network body supports and supports on prostate portion urethra inner wall, play the fixed action, prevent that the apparatus from being impressed the bladder in prostate portion, promote treatment safety. The valleys of valleys 312 of the grid unit are gathered in the fixation head 200, the recovery wire 100 extends from the fixation head 200 along the urethra and out of the genitals, and the auxiliary catheter is inserted under the traction of the recovery wire 100, so that the device can be conveniently removed from the patient.

In a preferred embodiment, the grid units include 1 first grid unit and an even number of second grid units, and the two second grid units located at symmetrical positions on two sides of the first grid unit have the same structure and size of mirror image, at this time, the annular waveform opening of the annular pipe network is formed by connecting odd number of wave peaks (1 first wave peak plus even number of second wave peak), the preferred total number of wave peaks is 3, 5 or 7, etc., when the tubular mesh stent structure acts on a treatment part, the first wave peak and the peak valley connecting the wave peaks abut against the middle lobe of prostate, and the second wave peak forms an isosceles shape during shaping, and the isosceles shape is respectively supported on the left and right side lobes of the prostate at the neck of bladder to expand the urethral passage.

In the illustrated embodiment, the tube mesh stent has 1 first mesh unit and 4 second mesh units, as shown in fig. 1, in this way, 5 wave crests are formed at the opening of the annular waveform, namely 1 first wave crest 301 and 4 second wave crests 302, wherein the first wave crest 301 is used as an auxiliary support and is supported on the inner wall of the urethra of the prostate part for fixing after the tube mesh stent 300 is implanted into the target position; simultaneously, use this first crest 301 as the axis, two liang formation isosceles parts of apparatus of second crest 302, two crest spans in the top are great, its two adjacent connecting rods provide longitudinal support along the vertical extension of urethra inside wall, can support the urethra inner wall at bladder neck prostate department with crest and connecting rod circumference, lateral lobe forms the expansion about to the prostate, connecting rod near first crest 301 forms pressure to the prostate middle lobe, expand, thereby form the moulding effect of flaring to prostate portion urethra, alleviate the increase of prostate and oppress urethra shrink, expand the urethra passageway.

In a preferred embodiment, the peaks and valleys of each grid unit are themselves self-symmetrical structures, respectively, and the second plurality of grid units have identical structures and dimensions. In some embodiments, the peaks and valleys of each grid unit are themselves self-symmetrical structures, respectively, and the second plurality of grid units have identical structures and dimensions.

In a preferred embodiment, the hollow tubular mesh stent device is formed by laser engraving a micro tube, and performing heat treatment and shaping on the micro tube, wherein the micro tube comprises a nickel-titanium alloy micro tube or a copper alloy micro tube.

Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, while the invention has been described in detail with reference to the foregoing preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims; the sizes in the drawings and the embodiments are not related to specific objects, and are not used for limiting the protection scope of the invention, and the sizes of the objects can be selected and changed according to actual needs.

Claims (9)

1. A recyclable temporary interventional instrument is characterized by comprising a pipe mesh support and a fixed head end, wherein the pipe mesh support is provided with an annular pipe network formed by connecting a plurality of grid unit annular arrays, the first end of the annular pipe network is provided with an annular wavy opening which axially fluctuates, the annular wavy opening is provided with wave crests which axially fluctuate, the wave crests comprise 1 first wave crest and a plurality of second wave crests, the peak crests of the second wave crests are positioned on a second circumference, and the peak crests of the first wave crests are positioned on the first circumference; the diameter of the first circumference is larger than that of the second circumference, and the axial distance between the first circumference and the fixed head end is smaller than that between the second circumference and the fixed head end; and the second end of the ring pipe network is connected in the fixed head end in a converging manner.

2. The retrievable temporary interventional instrument of claim 1, wherein the grid unit has peaks and valleys, the peaks forming open peaks of the annular network of tubes, the valleys converging into a fixed head; the peak parts and the valley parts are arranged in a butt joint mode through the openings, and the peak parts and the valley parts are connected into a closed grid unit through connecting rods connected to the two sides of the openings; a plurality of graticule mesh units are circular array and form the annular pipe network, and two adjacent graticule mesh units share a connecting rod, including 1 first graticule mesh unit and a plurality of second graticule mesh unit in a plurality of graticule mesh units, the peak of first graticule mesh unit forms the first crest of annular pipe network, the peak of second graticule mesh unit forms the second crest of annular pipe network.

3. The retrievable temporary interventional instrument of claim 2, wherein the plurality of links forming the network of annular tubes extend axially in parallel.

4. The retrievable temporary interventional instrument of claim 2, wherein the plurality of grid elements includes 1 first grid element and an even number of second grid elements, and wherein the two second grid elements located symmetrically on either side of the first grid element have mirror images of the same structure and dimensions.

5. The retrievable temporary interventional instrument of claim 2, wherein the tubular mesh stent includes at least 2 second mesh units.

6. The retrievable temporary interventional instrument of any one of claims 1 to 5, wherein the grid elements have a spatial hexagonal structure.

7. The recyclable temporary interventional instrument as set forth in any one of claims 1 to 5, wherein the tubular mesh stent is formed by laser engraving of a nickel-titanium alloy micro-tube or a copper alloy micro-tube.

8. The retrievable temporary interventional instrument of claim 7, further comprising a retrieval guide mechanism, the retrieval guide mechanism including a retrieval guide wire extending axially from the fixation tip in a direction away from the tubular mesh stent.

9. The recyclable temporary interventional instrument as set forth in claim 8, wherein the recycling guide wire is made of a polymer material.

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