CN108451588B - Resectoscope for intraurethral scar - Google Patents
Resectoscope for intraurethral scar Download PDFInfo
- Publication number
- CN108451588B CN108451588B CN201810170802.5A CN201810170802A CN108451588B CN 108451588 B CN108451588 B CN 108451588B CN 201810170802 A CN201810170802 A CN 201810170802A CN 108451588 B CN108451588 B CN 108451588B
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- China
- Prior art keywords
- probe
- outer sheath
- resectoscope
- scar
- intra
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 231100000241 scar Toxicity 0.000 title claims abstract description 48
- 238000007915 intraurethral administration Methods 0.000 title claims abstract description 35
- 239000000523 sample Substances 0.000 claims abstract description 84
- 210000003708 urethra Anatomy 0.000 claims abstract description 12
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 2
- 230000035515 penetration Effects 0.000 abstract description 5
- 208000031481 Pathologic Constriction Diseases 0.000 description 5
- 230000037390 scarring Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000036262 stenosis Effects 0.000 description 3
- 208000037804 stenosis Diseases 0.000 description 3
- 208000032544 Cicatrix Diseases 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000037387 scars Effects 0.000 description 2
- 238000012549 training Methods 0.000 description 2
- 206010065584 Urethral stenosis Diseases 0.000 description 1
- 206010061397 Urinary tract injury Diseases 0.000 description 1
- 210000003815 abdominal wall Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000027939 micturition Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002966 stenotic effect Effects 0.000 description 1
- 201000001988 urethral stricture Diseases 0.000 description 1
- 230000002485 urinary effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3205—Excision instruments
- A61B17/3207—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions
- A61B17/320758—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions with a rotating cutting instrument, e.g. motor driven
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B2017/320052—Guides for cutting instruments
Abstract
The invention discloses a resectoscope for an intra-urethral scar, which comprises a fixing frame, a bent probe, a straight probe, a probe outer sheath, an outer sheath inner core, a puncture needle and a trephine. The fixing frame comprises a rod part, and a first positioning part and a second positioning part are respectively arranged at two ends of the rod part. The straight line section of the bent probe can be fixed on the fixing frame through the first positioning part, and the end part of the arc section of the bent probe is provided with a positioning recess. The straight probe is cylindrical. The probe outer sheath is of a tubular structure and can be sleeved outside the straight probe, and the probe outer sheath can be fixed on the fixing frame through the second positioning part. The outer sheath inner core is tubular in structure and is capable of fittingly penetrating into the probe outer sheath. The puncture needle can penetrate into the inner core of the outer sheath. The trephine is tubular structure, and at least one end has annular cutting edge portion, and the trephine can overlap outside the pjncture needle to can penetrate in the probe sheath. The invention can reduce the operation difficulty of the operation, and improve the operation accuracy, thereby reducing the risk of urethra penetration.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a resectoscope for scars in a urethra.
Background
Male urinary tract injury is the leading position in urinary system injury, and the scar stenosis of urethra with different degrees after injury is also a common complication and sequela. In recent years, an intra-urethral cold knife incision has been used to treat urethral scarring stenosis, i.e., to cut a stenotic ring with a specially-made cold knife under direct view of the urethroscope. The cold knife incision can be performed with the insertion of a thin ureteral catheter as a guide, and an electric knife can be used to resect excess scar tissue if necessary. Thus, cold knife incisions are generally adapted to patients with incomplete urethral occlusion, yet able to pass through the guidewire. If the narrow back urethra is completely blocked but the length is not long, the bladder can be cut, a finger is used for guiding in the bladder, an electrotome or a urethral probe rod is used for chiseling through, and then the electrotome is put into the bladder to cut off scars, so that a channel is formed. The cold knife incision has complex operation, bleeding in operation and the like can also affect the operation, and particularly, the operation risk is high aiming at patients with complete occlusion of the posterior urethra, and the urethra penetration is easy to cause.
Accordingly, there is a need in the art for an improved resectoscope for an intra-urethral scar that overcomes the inconveniences and drawbacks of the current cold knife incisions and the like.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
The present invention has been made to overcome the above-mentioned drawbacks of the prior art, and an object thereof is to provide a resectoscope for an intra-urethral scar, which reduces the operation difficulty of the operation, improves the operation accuracy, and thus reduces the risk of urethral penetration.
The invention aims at adopting the following technical scheme: a resectoscope for an intra-urethral scar comprises a fixing frame, a bent probe, a straight probe, a probe outer sheath, an outer sheath inner core, a puncture needle and a trephine. The fixing frame comprises a rod part, and a first positioning part and a second positioning part are respectively arranged at two ends of the rod part. The bent probe comprises a straight line section and an arc-shaped section, the straight line section can be fixed on the fixing frame through the first positioning part, and the end part of the arc-shaped section is provided with a positioning recess. The straight probe is cylindrical. The probe outer sheath is of a tubular structure and can be sleeved outside the straight probe, and the probe outer sheath can be fixed on the fixing frame through the second positioning part. The outer sheath inner core is tubular in structure and is capable of penetrating into the probe outer sheath. The puncture needle can penetrate into the inner core of the outer sheath. The trephine is tubular structure, and at least one end has annular cutting edge portion, and the trephine can overlap outside the pjncture needle to can penetrate in the probe sheath.
Further, in the above technical solution, the puncture needle has one or more barb-shaped tips.
Further, in the above technical solution, two or more guiding protrusions are provided on the outer tube wall of the outer sheath inner core.
Further, in the above technical solution, the outer tube wall of the outer sheath inner core is provided with guide threads.
Further, in the above technical solution, the rod portion of the fixing frame has a plurality of holes.
Further, in the above technical scheme, one end of the straight-type probe is provided with the operation part for the operator to hold, insert or take out the straight-type probe.
Further, in the above technical scheme, the first positioning portion and the second positioning portion fix the bent probe and the probe sheath on the fixing frame respectively through locking screws.
Further, in the above technical solution, the straight line section of the bent probe is prismatic.
Further, in the above technical solution, the resectoscope for the intra-urethral scar is made of metal.
Compared with the prior art, the invention has the following beneficial effects:
1. the trephine knife is controlled through a series of fixing parts and guiding parts, so that the operation accuracy is ensured, the operation difficulty is reduced, the risk of urethra penetration is reduced, and the problem of total occlusive urethra stenosis within 2cm can be solved at one time.
2. And equipment such as an endoscope and a monitor is not needed, so that the use and maintenance cost is low.
3. The exciser of the invention can be made of metal, can be repeatedly sterilized under high pressure, and has long service life.
4. The resectoscope is simple to operate, can be independently operated by a person skilled in the art through simple training, and is easy to develop in primary hospitals.
The foregoing description is only an overview of the present invention, and it is to be understood that it is intended to provide a more clear understanding of the technical means of the present invention and to enable the technical means to be carried out in accordance with the contents of the specification, while at the same time providing a more complete understanding of the above and other objects, features and advantages of the present invention, and one or more preferred embodiments thereof are set forth below, together with the detailed description given below, along with the accompanying drawings.
Drawings
Fig. 1a is a schematic view of a holder for a resectoscope for an intra-urethral scar in accordance with an embodiment of the present invention;
FIG. 1b is a schematic view of a curved probe of a resectoscope for an intra-urethral scar in accordance with an embodiment of the present invention;
FIG. 1c is a schematic view of a straight probe of a resectoscope for an intra-urethral scar in accordance with an embodiment of the present invention;
FIG. 1d is a schematic view of a probe sheath of a resectoscope for an intra-urethral scar in accordance with an embodiment of the present invention;
FIG. 1e is a schematic view of the inner core of the outer sheath of a resectoscope for intra-urethral scarring in accordance with an embodiment of the present invention;
FIG. 1f is a schematic view of a needle of a resectoscope for an intra-urethral scar in accordance with an embodiment of the present invention;
fig. 1g is a schematic view of a trephine blade of a resectoscope for intra-urethral scarring in accordance with an embodiment of the present invention;
FIG. 1h is a schematic representation of a file of a trephine knife of a resectoscope for intra-urethral scarring in accordance with an embodiment of the present invention;
fig. 2 is a view showing the state of use of the resectoscope for an intra-urethral scar according to an embodiment of the present invention;
fig. 3 is a view showing the state of use of the resectoscope for an intra-urethral scar according to an embodiment of the present invention;
fig. 4 is a view showing the state of use of the resectoscope for an intra-urethral scar according to an embodiment of the present invention;
fig. 5 is a view of the use of the resectoscope for an intra-urethral scar in accordance with an embodiment of the present invention.
The following reference numerals are attached thereto in combination with the accompanying drawings:
10-a fixing frame, 11-a rod part, 111-a pore canal, 12-a first positioning part and 13-a second positioning part; 20-bending probes, 21-straight line sections, 22-arc sections and 23-positioning depressions; 30-a straight probe, 31-an operation part; 40-probe sheath; 50-an outer sheath inner core, 51-a guide protrusion; 60-puncture needle, 61-barb-like tip; 70-ring bit, 71-annular blade; 80-knife file.
Detailed Description
In order to further illustrate the technical means and technical effects adopted by the present invention to achieve the intended objects, the following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the embodiments.
As shown in fig. 1a to 1g, the resectoscope for an intra-urethral scar of the present invention comprises a fixing frame 10, a bent probe 20, a straight probe 30, a probe outer sheath 40, an outer sheath inner core 50, a puncture needle 60 and a trephine 70. Specifically, the fixing frame 10 includes a rod 11, and a first positioning portion 12 and a second positioning portion 13 are respectively disposed at two ends of the rod 11. The bent probe 20 includes a straight line section 21 and an arc-shaped section 22, the straight line section 21 can be fixed on the fixing frame 10 through the first positioning portion 12, and the end portion of the arc-shaped section 22 has a positioning recess 23. The straight probe 30 is cylindrical. The probe outer sheath 40 has a tubular structure, and can be sleeved outside the straight probe 30, and the probe outer sheath 40 can be fixed on the fixing frame 10 through the second positioning part 13. The outer sheath core 50 is tubular in configuration and is capable of penetrating into the probe outer sheath 40. The outer diameter of the outer sheath core 50 matches the inner diameter of the stylet outer sheath 40 to ensure that the outer sheath core 50 can coaxially penetrate the stylet outer sheath 40. In addition, the inner diameter of the outer sheath core 50 should be matched to the diameter of the needle 60 so that the needle 60 can just penetrate into the outer sheath core 50. The trephine 70 is tubular in configuration, having an annular blade portion 71 at least one end, and the trephine 70 is capable of being sleeved over the needle 60 and penetrating into the probe sheath 40.
In one or more embodiments of the present invention, it is preferable that both ends of the trephine 70 have annular blade portions, and one end thereof is selected when in use.
In one or more embodiments of the present invention, the needle 60 may have one or more barb-like tips 61 to facilitate removal of severed scar tissue. In the embodiment shown in fig. 1f, one of the puncture needles 60 has a barb-shaped tip 61, which is not limited to this, and those skilled in the art can design the number of barb-shaped tips according to the needs, and all the barb-shaped tips are covered in the protection scope of the present invention.
The outer sheath core 50 may be of a uniform thick tubular construction with an outer diameter that matches the probe outer sheath 40. However, in order to save material, reduce costs, and at the same time reduce weight, it is preferable that in one or more embodiments of the present invention, the outer tube wall of the outer sheath core 50 may be provided with two or more guide protrusions 51. The outer diameter of the guide protrusion 51 is matched with the inner diameter of the probe outer sheath 40, and the guide protrusion 51 plays a guide role in the process of penetrating the outer sheath inner core 50 into the probe outer sheath 40, so that the central axes of the outer sheath inner core 50 and the probe outer sheath 40 coincide. In the embodiment shown in fig. 1e, there are two guide protrusions 51, and it should be understood that the present invention is not limited thereto.
In one or more embodiments of the present invention, the outer tube wall of the outer sheath core 50 may have guide threads (not shown). The outer diameter of the guide screw thread is matched with the inner diameter of the probe outer sheath 40, and the guide screw thread plays a guiding role in the process that the outer sheath inner core 50 penetrates into the probe outer sheath 40, so that the central axes of the outer sheath inner core 50 and the probe outer sheath 40 coincide.
In one or more embodiments of the present invention, the stem 11 of the mount 10 has a plurality of apertures 111. In the embodiment shown in fig. 1a, the hole 111 is a circular hole, and it will be understood that those skilled in the art may alternatively provide other holes or structures to reduce the weight of the fixing frame 10, which is not limited by the present invention.
In one or more embodiments of the present invention, one end of the straight probe 30 is provided with an operating portion 31 for an operator to hold, insert, or remove the straight probe 30. In the embodiment shown in fig. 1c, the operation portion 31 is spherical, and it should be understood that the present invention is not limited thereto, and those skilled in the art can select operation portions with different shapes and forms according to actual needs.
In one or more embodiments of the present invention, the first and second positioning portions 12 and 13 are fixed to the holder 10 by locking screws, respectively, the bent probe 20 and the probe sheath 40. It should be understood that the present invention is not limited thereto, and those skilled in the art can select different fixing modes according to actual needs, which are all included in the scope of the present invention.
In one or more embodiments of the present invention, the straight section 21 of the bent probe 20 may be prismatic (as shown in fig. 1 b) for ease of fixation and operator use. It should be understood that the present invention is not limited thereto.
Preferably, in one or more embodiments of the present invention, the resectoscope for an intra-urethral scar may be made of metal, thus enabling repeated autoclaving and longer service life. It should be understood that those skilled in the art may select other suitable materials according to actual needs, so as to achieve the purposes of cost saving and/or robustness, and the present invention is not limited thereto.
Preferably, in one or more embodiments of the present invention, the depth of the positioning recess 23 is 0.3 to 0.6cm, and particularly preferably, the depth of the positioning recess 23 is 0.5cm. It should be understood that the present invention is not limited thereto, and those skilled in the art can select an appropriate recess depth according to actual needs.
Fig. 1h shows a maintenance tool file 80 of the resectoscope for an intra-urethral scar of the present invention. When the annular blade portion 71 is insufficiently sharp for use or long-term placement, one or more files 80 may be used to grind the annular blade portion 71. In the embodiment shown in fig. 1h, one of the files is a triangular file for filing the outer surface of the annular blade portion 71 of the trephine 70 and the other is an annular file for filing the inner surface of the annular blade portion 71. It should be understood that the number and shape of the files is not limited thereto and those skilled in the art may choose as desired.
In connection with fig. 1 a-1 g, and fig. 2-5, a method of using a resectoscope for an intra-urethral scar in accordance with one or more embodiments of the present invention may include the steps of:
a. inserting the straight probe 30 with the probe outer sheath 40 through the patient's external urethral orifice until the straight probe 30 reaches the distal end of the scar within the urethra;
b. making an incision through the abdominal wall of the bladder, and placing the bent probe 20 from the incision and through the urethral orifice to the proximal end of the scar within the urethra;
c. fixing the bent probe 20 and the straight probe 30 (sleeved in the probe sheath 40) on the fixing frame 10 through the first positioning part 12 and the second positioning part 13 respectively (as shown in fig. 2);
d. taking out the straight probe 30;
e. inserting the outer sheath inner core 50 into the probe outer sheath 40;
f. the needle 60 (either barbed or unbarbed) is inserted into the outer sheath core 50 and penetrates scar tissue until reaching the locating depression 23 of the bent probe 20 (as shown in fig. 3);
g. removing the outer sheath core 50;
h. inserting the trephine 70 between the probe sheath 40 and the needle 60, and rotating the annular blade 71 to cut the scar in the urethra until the trephine 70 hits the bent probe 20 (as shown in fig. 4);
i. the trephine 70, the needle 60 and the resected scar tissue are removed together (as shown in fig. 5);
j. if scar tissue is not removed together, the excised intra-urethral scar may be cleaned by a needle 60 having a barbed tip 61.
The resectoscope for the inner-urethral scar can solve the problems of total occlusive urethral stricture within 2cm, severe incomplete urethral scar stricture and scar urethral slight bending and stricture and recover natural urination. The resectoscope for the intra-urethral scar can ensure operation accuracy, reduce operation difficulty and reduce the risk of urethral penetration by controlling the trephine knife through a series of positioning components and guiding components. In addition, the invention does not need devices such as endoscope, monitor and the like when in use, and has low use and maintenance cost. The resectoscope is simple to operate, can be independently operated by a person skilled in the art through simple training, and is easy to develop in primary hospitals.
The above disclosure is merely a specific preferred embodiment of the present invention, but the present invention is not limited thereto, and any changes, such as simple modifications, equivalent changes and modifications made to the above embodiments, will fall within the scope of the present invention.
Claims (8)
1. A resectoscope for an intra-urethral scar, comprising:
the fixing frame comprises a rod part, wherein both ends of the rod part are respectively provided with a first positioning part and a second positioning part;
the bent probe comprises a straight line section and an arc-shaped section, the straight line section can be fixed on the fixing frame through the first positioning part, and the end part of the arc-shaped section is provided with a positioning recess;
a straight probe, which is cylindrical;
the probe outer sheath is of a tubular structure and can be sleeved outside the straight probe, and the probe outer sheath can be fixed on the fixing frame through the second positioning part;
an outer sheath inner core of tubular construction and adapted to penetrate into the probe outer sheath; the outer diameter of the outer sheath inner core is matched with the inner diameter of the probe outer sheath so as to ensure that the outer sheath inner core can coaxially penetrate into the probe outer sheath;
a puncture needle capable of penetrating into the outer sheath inner core, the puncture needle having one or more barb-like tips; and
the trephine is of a tubular structure, at least one end of the trephine is provided with an annular blade part, and the trephine can be sleeved outside the puncture needle and can penetrate into the probe outer sheath;
the puncture needle is inserted into the outer sheath inner core, and the inner diameter of the outer sheath inner core is matched with the diameter of the puncture needle, so that the puncture needle can just penetrate into the outer sheath inner core and penetrate into scar tissues until reaching the positioning recess of the bent probe; taking out the inner core of the outer sheath, inserting the trephine between the outer sheath of the probe and the puncture needle, and rotating the annular blade part to cut off the scar in the urethra until the trephine bumps against the bent probe; the trephine, the puncture needle and the resected scar tissue are taken out together.
2. The resectoscope for an intra-urethral scar according to claim 1, wherein at least two guide protrusions are provided on an outer tube wall of the outer sheath core.
3. The resectoscope for an intra-urethral scar of claim 1 wherein the outer tube wall of the outer sheath core has guide threads thereon.
4. The resectoscope for an intra-urethral scar of claim 1 wherein the shaft portion of the mount has a plurality of tunnels.
5. The resectoscope for an intra-urethral scar according to claim 1, wherein an operating part is provided at one end of the straight probe for an operator to hold, insert or withdraw the straight probe.
6. The resectoscope for an intra-urethral scar of claim 1, wherein the first and second locating portions secure the bent probe and the probe sheath to the mount by locking screws, respectively.
7. The resectoscope for an intra-urethral scar of claim 1 wherein the straight section of the bent probe is prismatic.
8. The resectoscope for an intra-urethral scar according to claim 1, wherein the resectoscope for an intra-urethral scar is made of metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810170802.5A CN108451588B (en) | 2018-03-01 | 2018-03-01 | Resectoscope for intraurethral scar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810170802.5A CN108451588B (en) | 2018-03-01 | 2018-03-01 | Resectoscope for intraurethral scar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108451588A CN108451588A (en) | 2018-08-28 |
| CN108451588B true CN108451588B (en) | 2024-03-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810170802.5A Active CN108451588B (en) | 2018-03-01 | 2018-03-01 | Resectoscope for intraurethral scar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108451588B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2049114U (en) * | 1989-01-25 | 1989-12-13 | 杨太森 | Automatic orient multifunctional instrument for excising cicatrix in urethra |
| CN2278441Y (en) * | 1996-06-26 | 1998-04-15 | 李栋 | Rotary intraurethral cutting machine |
| CN2281157Y (en) * | 1996-12-28 | 1998-05-13 | 王业勇 | Instrument for scar cutting-off and measuring and orientating suture of posterior |
| CN208799288U (en) * | 2018-03-01 | 2019-04-30 | 首都医科大学附属北京康复医院（北京工人疗养院） | Resectoscope for scar in urethra |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015144750A (en) * | 2014-02-03 | 2015-08-13 | テルモ株式会社 | Urethral stenosis therapeutic method |
-
2018
- 2018-03-01 CN CN201810170802.5A patent/CN108451588B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2049114U (en) * | 1989-01-25 | 1989-12-13 | 杨太森 | Automatic orient multifunctional instrument for excising cicatrix in urethra |
| CN2278441Y (en) * | 1996-06-26 | 1998-04-15 | 李栋 | Rotary intraurethral cutting machine |
| CN2281157Y (en) * | 1996-12-28 | 1998-05-13 | 王业勇 | Instrument for scar cutting-off and measuring and orientating suture of posterior |
| CN208799288U (en) * | 2018-03-01 | 2019-04-30 | 首都医科大学附属北京康复医院（北京工人疗养院） | Resectoscope for scar in urethra |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108451588A (en) | 2018-08-28 |
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