CN2088876U - Marmen holder for urethra and prostate - Google Patents

Abstract

The utility model relates to a shape memory alloy holder for an urethra and a prostate, which is used for treating prostate hyperplasia. The holder uses shape memory alloy silks to wind into a dense screw drum structure whose one end is in a trumpet ostium which is used for fixing and blocking the hyperplasia of a middle lobe lip sample, and the drum is used for supporting the urethrostenosis of the prostate. The holder of the utility model utilizes the characteristic of shape memory alloy and can be easily put in a human body by a urinary bladder mirror, and the back urethra effectively reduces the remnant urine in the urinary bladder and avoids traumatic operation.

Description

Marmen holder for urethra and prostate

This utility model is a kind of prostate-urethra rack that adopts marmem to make, and belongs to the medical domain for the treatment of hyperplasia of prostate.

Prostatic hyperplasia is one of common disease of elderly men, and the highest with age group morbidity in 50～75 years old, about 35～50% people has prostatic hyperplasia in various degree in male more than 50 years old.At present prostatic hyperplasia is mainly adopted medicine, open surgery or TURP(Transurethral prostatic electroresection A) etc. method treatment.Problems such as but Drug therapy exists the course of treatment long, and curative effect is sure, and, can't effect a radical cure this disease to many patients; Open surgery is one of effective therapeutic modality, but to elderly patient, because of with dysfunctions such as the heart, lung, kidney and diabetes etc., has increased the difficulty of operation and postoperative care; The TURP(Transurethral prostatic electroresection A) developed country's treatment hyperplasia of prostate reaches 60～90% abroad, because of body surface does not have wound, recover very fast, accepted by the patient easily, yet TURP and open surgery belong to invasive surgery together, its operation is influenced by patient's physical qualification itself, and is also relevant with operator skilled operation degree.Mainly be that technical operation is had relatively high expectations, it is difficult to grasp, and the apparatus dependence on import costs an arm and a leg, even TURP carries out hospital preferably, still has 10～15% cases need use open surgery, thereby has limited extensive use clinically.

Provide a kind of prostate-urethra dilator in the CN88219869 patent, the main airbag inflation that relies on, make the urethra broadening of constriction, because of its action time very short, though reduced the elastical retraction power of capsula prostatica, but being difficult to consolidate curative effect or preventing that the slow hypertrophy of prostate from pushing urethra once again, simple middle lobe hyperplasia is difficult to prove effective, is makeshift.

In West Germany's magazine, provide a kind of rustless steel urethra rack (see figure 4) of West Germany.Not inflatable because of stainless steel stent, if diameter is excessive, be difficult to insert, too small then do not have a supporting role, is difficult to keep the position of support at the back urethra.And this support bladder outlet end is blunt pointed, and spiral is the white-out shape, and urine will flow through support from gap between screw and blunt sharp aperture, and voiding resistance is increased, and influences the maximum voided volume in the unit interval.

At present, global population structure aging day by day, the sickness rate of hyperplasia of prostate also can obviously increase, and seeking simple and effective Therapeutic Method is problem anxious to be solved.Along with the raising of people living condition and life quality, people take like a shot, and those are simple to operate, grasp is easy, wound is little, misery is little, recover fast and the few Therapeutic Method of complication.

For this reason, it is the solid matter spiral tubular prostate-urethra rack of bell mouth shape that this utility model has designed an a kind of end of being made by shape-memory alloy wire, insert urethra by cystoscope, rely on the expansion of support self that the urethra that pushed by prostate is partly enlarged, it is unimpeded to urinate, thereby can reduce the intravesical residual urine volume effectively, avoid invasive surgery and reach the treatment hyperplasia of prostate final purpose.

This utility model is realized by following manner:

This utility model utilizes the excellent in shape memory performance of marmem, be wound in the prostate-urethra rack of solid matter helicoidal structure with shape-memory alloy wire, this solid matter helicoidal structure is made up of two parts, promptly is used to support the solid matter spiral cylinder 1 at prostate ankylo-urethria position and is positioned at support one end be used for stopping the outgrowth solid matter spiral of middle period lip sample horn mouth 2.The recovery temperature of the prostate-urethra rack that shape-memory alloy wire is made is 34～40 °.Because the TiNi marmem is to the compatibility of human body, it is better to make this support effect with the TiNi shape-memory alloy wire.

During use, this support at low temperatures (about 0～10 ℃) deformable to be diameter less than cystoscope sheath cylindric, purpose is to insert urethra by cystoscope smoothly, is placed on urethra position, back.In human body temperature, strained support can revert to the solid matter spiral tubular that an end is a bell mouth shape (being original design form) once again, the horn mouth of support is fixed on the bladder outlet place, and the barrel of support also expands thereupon narrow prostate-urethra is expanded long-term effectively.Utilize the characteristic of deliquescing under the marmem low temperature, inject brine ice, make the support deliquescing and taking-up easily through cystoscope.

Below in conjunction with accompanying drawing prostate-urethra rack of the present utility model is described in detail:

Fig. 1 is a prostate-urethra rack structural representation of the present utility model.

Fig. 2 is a prostate-urethra rack of the present utility model deformed configurations sketch at low temperatures.

Fig. 3 is that prostate-urethra rack of the present utility model is placed on the locational sketch map of urethra behind the human body.

4 is bladder among Fig. 3, and 5 is prostate, and 6 is the back urethra.

Fig. 4 is a kind of rustless steel urethra rack.

Marmem prostate-urethra rack of the present utility model twines the solid matter helical form with the shape-memory alloy wire of diameter 0.4～0.7mm, the one end is a horn mouth 2, the opening of horn mouth 2 is 10～20mm, horn mouth 2 length are 5～15mm, root 3 by horn mouth 2 is a cylinder 1 to the support other end, the external diameter of cylinder 1 is 6～9mm, and the length of cylinder 1 is 40～70mm.The recovery temperature of the prostate-urethra rack that shape-memory alloy wire is made is 34～40 ℃.

Marmem prostate-urethra rack of the present utility model is positioned over urethra position behind the human body by following step:

1, under the low temperature prostate-urethra rack is deformed into cylindric, standby less than the cystoscope sheath diameter.

2, per urethra inserts cystoscope, assert the distance of seminal colliculus apart from bladder outlet, and with this urethral length of obturator prediction (this apart from be stent length).

3, withdraw from the cystoscope core, use obturator or foreign body forceps that strained support is delivered to selected good back urethra position.

4, for shortening the time that support recovers original design shape, can inject 45～50 ℃ of warm water behind the extraction obturator.Like this, support relies on its memory characteristic, expand into position shown in Figure 3 rapidly.

5, all operate under the aseptic condition and carry out.

Marmem prostate-urethra rack of the present utility model has following advantage:

1, owing to adopt marmem, utilize the characteristic of this alloy, make its distortion under the low temperature, Utilize cystoscope can make things convenient for, easily insert urethra position behind the human body. Then, in human body temperature, support reverts to former design shape, and the urethra that effectively prostate is increased extruding is expanded long-term effectively, thereby reaches the final purpose for the treatment of hyperplasia of prostate.

2, but support is done the curl increasing friction force, has incarceration, support and fixation, prevents displacement, guarantees the stop place at rear urethra. Horn section is attached at the bladder outlet place, does not subdue the flow of urinating in the unit interval, not only can prevent the support slippage but also can stop the topped of middle lobe hyperplasia, and keep the physiology shape at this position of human body, to reduce to greatest extent voiding resistance.

3, marmem has good shape memory and super-elasticity function, and TiNi marmem especially also has good corrosion resistance and to the compatibility of human body, can not produce pathologic harm to human body.

4, enlarge medical range, made the patient avoid the hardship of traumatic treatment, replenished or remedied the deficiency of present treatment hyperplasia of prostate, and treat hyperplasia of prostate with the present invention, it is simple to perform the operation, and low price can make more patient be treated timely and effectively.

Marmem prostate-urethra rack of the present invention successfully is placed in the volunteer patient body at present, and through clinical observation, therapeutic effect is very satisfied.

Claims (5)

1, a kind of marmem prostate-urethra rack that is used for the treatment of prostatic hyperplasia, it is characterized in that said support is wound in the solid matter helicoidal structure with shape-memory alloy wire, this solid matter helicoidal structure is by the cylinder that is used to support the prostate ankylo-urethria position (1) and be positioned at support one end and be used for stopping that the outgrowth horn mouth of middle period lip sample (2) forms.

2, support as claimed in claim 1, the diameter that it is characterized in that said shape-memory alloy wire is 0.4～0.7mm, the opening of said horn mouth (2) is 10～20mm, the length of horn mouth (2) is 5～15mm, root (3) by horn mouth (2) is cylinder (1) to the support other end, the external diameter of cylinder (1) is 6～9mm, and the length of cylinder (1) is 40～70mm.

3, as claim 1,2 described supports, the recovery temperature that it is characterized in that the support that said shape-memory alloy wire is made is 34～40 ℃.

4, as claim 1,2 described supports, the shape-memory alloy wire that it is characterized in that is the TiNi shape-memory alloy wire.

5, support as claimed in claim 3 is characterized in that said marmem is about the TiNi shape-memory alloy wire.

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