CA1328125C - Electrode to destroy renal stones - Google Patents
Electrode to destroy renal stonesInfo
- Publication number
- CA1328125C CA1328125C CA000560720A CA560720A CA1328125C CA 1328125 C CA1328125 C CA 1328125C CA 000560720 A CA000560720 A CA 000560720A CA 560720 A CA560720 A CA 560720A CA 1328125 C CA1328125 C CA 1328125C
- Authority
- CA
- Canada
- Prior art keywords
- electrode
- cage
- tip
- core
- support rod
- Prior art date
- 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.)
- Expired - Fee Related
Links
- 206010029148 Nephrolithiasis Diseases 0.000 title abstract 2
- 230000014759 maintenance of location Effects 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract description 2
- 239000003814 drug Substances 0.000 abstract description 2
- 238000002560 therapeutic procedure Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 210000004124 hock Anatomy 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000035939 shock 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
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B17/225—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for for extracorporeal shock wave lithotripsy [ESWL], e.g. by using ultrasonic waves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B17/22004—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K15/00—Acoustics not otherwise provided for
- G10K15/04—Sound-producing devices
- G10K15/06—Sound-producing devices using electric discharge
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B17/22004—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
- A61B2017/22027—Features of transducers
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Vascular Medicine (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Surgical Instruments (AREA)
- Disintegrating Or Milling (AREA)
- Spark Plugs (AREA)
- Endoscopes (AREA)
- Discharge Lamp (AREA)
- Microwave Tubes (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Electrotherapy Devices (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
ABSTRACT
This invention is related to the field of medicine, and, specifically to apparatus for the destruction of renal stones. The disclosed electrode can be used several times in patient therapy, based on the fact that its main components are interchangeable. It consists of a core (1), a threaded aperture (2) where a support rod (3) is introduced with a conical tip (4) having a cylindrical step for its retention. A cage (5) of four elements with a central aperture (6) supports another conical tip (7).
This invention is related to the field of medicine, and, specifically to apparatus for the destruction of renal stones. The disclosed electrode can be used several times in patient therapy, based on the fact that its main components are interchangeable. It consists of a core (1), a threaded aperture (2) where a support rod (3) is introduced with a conical tip (4) having a cylindrical step for its retention. A cage (5) of four elements with a central aperture (6) supports another conical tip (7).
Description
`~ 1328125 Thie invention i9 related to the field of Medicine. I-t relate~ to apparatu3 for the creation of ~hock wave~ to destroy renal ~tone~.
Different types of electrodee to de~troy renal ~tone~ are already known; ~ee, for example, German Patent # 35 43 881 International Cla~ification A61B 17/22) which consi~t~ of an electrode that ha~ a core with a rigid qharp end, a ~ocket with a central aperture having in its thin wall aix perimetral aperture~
parallel to the central on0. A cage i~ provided a~ an additional component. The technical di~advantages of this electrode i~ tha-t it~
tip~ are not removable and interchaneeable ~o that the electrode can be u~ed only once.
Another technical di~advantage i~ related to the eocket-cage a~sembly where the ~ix perimetral aperture~ and the ~ix elements fixed by the welding to the socket do not ~upply sufficient rigidity to the unit ~o that the tips are easily di~placed during operation, which reduce~ electrode efficiency. The con~tructed unit iq extremely complex technically.
Another electrode i~ ~hown in German Patent 331~837 which coneiqtc of a cage formed by three element~ ~upporting a mandrel, with a tip placed in a cyllndric bar structure, removable and adju~table. The core end~ in a mandrel which hold~ the tip.
The technical disadvantage of thi~ electrode i9 that the cage ha~ three element~ distributed at 120 radially which pre~ent a barrier to the exit of the ~hock wave. Ideally there ~hould not be any element in the cage aligned with the longer ~emi-axiq of the -- 1 -- ~
kh/
.....
~ 32~12~
. .
semi-ellipse, but thi~ is unavoidable in this construction leading to the destruction of one of the elements by cavitation. The mandrel portion of the cage results in an increase in the stresses of the supported elements, decreasing the electrode's useful life and reliability. From a technical view point its manufacture is as complex as the unit of the previous patent. It has a significant loss of energy of the shock wave because the end or apex where the energy is produced is of plane shape.
The es~ence of the present invention consists of an electrode that has a core with a threaded aperture where a ~upport rod is introduced with an interchangeable tip of conical shape having a cylindrical step for its retention and a cage having four element~
around a central aperture where another tip of conical shape is introduced also with a cylindrical step for its retention.
~rief Description of the Drawing -Fig. 1 i~ a main view of the electrode in cross-section showing the core and cage.
Figure 2 i~ an illustrative view of the cage and it~ cross-section along line A-A.
The invention consi~ts of an electrode (Fig. 1) with a core (1) and a threaded aperture (2) receiving a support rod (3) with a conical tip (4) having a cylindrical step for its retention which may be welded in position. A cage (5) is provided having four elements with a central aperture (6) receiving a conical tip (7) retained by a cylindrical step.
~h/
'-' ' t ' `` 1~281~
The manufacture of this electrode is a3 follows: The support rod is tapped to form a hole (3) where the tip i~ in~erted and rigidly fixed (4), this unit is fixed in position with a set screw (2) that also enablee adjustment of the support rod ~3) in the core (l). An insulator (8) receives the core and holds it and the ~upport rod securely, The insulator (8) is formed externally to be a ~upport for ths cage (5), which i9 generally cylindrical and supports the tip (7).
The advantage of this electrode is based on the fact that it~ manufacture enables interchangeability of tips (7 and 4). The de~ign i~ straightforward since the cage (5) and external tip (7) make up a unit of two sections and not eight a~ in Patent # 35 43 881 and the electrode patent ~ 3316837 which ha~ a mandrel rigidly fixed to the cage besides being welded in three places to the rest of the unit.
Another characteristic i~ that the welding of cage (5) to tip (7) iY performed around a single aperture which differs from the identified patent3 which require many welds.
Another characteri~tic of the electrode of this invention is that the support rod (3) enables adjustment and change of the tip (4).
kh/
. ' .
.
,. ' ",'`' . ': .
Different types of electrodee to de~troy renal ~tone~ are already known; ~ee, for example, German Patent # 35 43 881 International Cla~ification A61B 17/22) which consi~t~ of an electrode that ha~ a core with a rigid qharp end, a ~ocket with a central aperture having in its thin wall aix perimetral aperture~
parallel to the central on0. A cage i~ provided a~ an additional component. The technical di~advantages of this electrode i~ tha-t it~
tip~ are not removable and interchaneeable ~o that the electrode can be u~ed only once.
Another technical di~advantage i~ related to the eocket-cage a~sembly where the ~ix perimetral aperture~ and the ~ix elements fixed by the welding to the socket do not ~upply sufficient rigidity to the unit ~o that the tips are easily di~placed during operation, which reduce~ electrode efficiency. The con~tructed unit iq extremely complex technically.
Another electrode i~ ~hown in German Patent 331~837 which coneiqtc of a cage formed by three element~ ~upporting a mandrel, with a tip placed in a cyllndric bar structure, removable and adju~table. The core end~ in a mandrel which hold~ the tip.
The technical disadvantage of thi~ electrode i9 that the cage ha~ three element~ distributed at 120 radially which pre~ent a barrier to the exit of the ~hock wave. Ideally there ~hould not be any element in the cage aligned with the longer ~emi-axiq of the -- 1 -- ~
kh/
.....
~ 32~12~
. .
semi-ellipse, but thi~ is unavoidable in this construction leading to the destruction of one of the elements by cavitation. The mandrel portion of the cage results in an increase in the stresses of the supported elements, decreasing the electrode's useful life and reliability. From a technical view point its manufacture is as complex as the unit of the previous patent. It has a significant loss of energy of the shock wave because the end or apex where the energy is produced is of plane shape.
The es~ence of the present invention consists of an electrode that has a core with a threaded aperture where a ~upport rod is introduced with an interchangeable tip of conical shape having a cylindrical step for its retention and a cage having four element~
around a central aperture where another tip of conical shape is introduced also with a cylindrical step for its retention.
~rief Description of the Drawing -Fig. 1 i~ a main view of the electrode in cross-section showing the core and cage.
Figure 2 i~ an illustrative view of the cage and it~ cross-section along line A-A.
The invention consi~ts of an electrode (Fig. 1) with a core (1) and a threaded aperture (2) receiving a support rod (3) with a conical tip (4) having a cylindrical step for its retention which may be welded in position. A cage (5) is provided having four elements with a central aperture (6) receiving a conical tip (7) retained by a cylindrical step.
~h/
'-' ' t ' `` 1~281~
The manufacture of this electrode is a3 follows: The support rod is tapped to form a hole (3) where the tip i~ in~erted and rigidly fixed (4), this unit is fixed in position with a set screw (2) that also enablee adjustment of the support rod ~3) in the core (l). An insulator (8) receives the core and holds it and the ~upport rod securely, The insulator (8) is formed externally to be a ~upport for ths cage (5), which i9 generally cylindrical and supports the tip (7).
The advantage of this electrode is based on the fact that it~ manufacture enables interchangeability of tips (7 and 4). The de~ign i~ straightforward since the cage (5) and external tip (7) make up a unit of two sections and not eight a~ in Patent # 35 43 881 and the electrode patent ~ 3316837 which ha~ a mandrel rigidly fixed to the cage besides being welded in three places to the rest of the unit.
Another characteristic i~ that the welding of cage (5) to tip (7) iY performed around a single aperture which differs from the identified patent3 which require many welds.
Another characteri~tic of the electrode of this invention is that the support rod (3) enables adjustment and change of the tip (4).
kh/
. ' .
.
,. ' ",'`' . ': .
Claims
PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An electrode with interchangeable parts comprising a core (1) having a threaded aperture (2) adapted to receive a support rod (3) having a conical tip (4), the support rod having a cylindrical step for the reception of the tip, a cage (5) of four elements with a central aperture (6) receiving a further tip (7) of conical configuration.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CU65/87 | 1987-04-28 | ||
| CU06587A CU22021A1 (en) | 1987-04-28 | 1987-04-28 | Electrode for renal calculus destruction. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1328125C true CA1328125C (en) | 1994-03-29 |
Family
ID=5459285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000560720A Expired - Fee Related CA1328125C (en) | 1987-04-28 | 1988-03-07 | Electrode to destroy renal stones |
Country Status (12)
| Country | Link |
|---|---|
| JP (1) | JPS63281640A (en) |
| AT (1) | AT398528B (en) |
| BG (1) | BG60304B2 (en) |
| BR (1) | BR8801940A (en) |
| CA (1) | CA1328125C (en) |
| CU (1) | CU22021A1 (en) |
| DE (1) | DE3814468A1 (en) |
| ES (1) | ES2007822A6 (en) |
| FR (1) | FR2614520A1 (en) |
| GB (1) | GB2205503B (en) |
| IT (1) | IT1219544B (en) |
| SU (1) | SU1746864A3 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3904049C1 (en) * | 1989-02-10 | 1990-06-28 | Storz Medical Ag, Kreuzlingen, Ch | |
| DE4016054A1 (en) * | 1990-05-18 | 1991-11-21 | Dornier Medizintechnik | SPARK RANGE FOR LITHOTRIPSY |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2635635C3 (en) * | 1976-08-07 | 1979-05-31 | Dornier System Gmbh, 7990 Friedrichshafen | Spark gap for generating shock waves for the contact-free destruction of calculus in the bodies of living beings |
| DE3150430C1 (en) * | 1981-12-19 | 1983-07-28 | Dornier System Gmbh, 7990 Friedrichshafen | Circuit for generating an underwater discharge |
| DE3316837C2 (en) * | 1983-05-07 | 1986-06-26 | Dornier System Gmbh, 7990 Friedrichshafen | Device for generating shock waves by means of a spark gap for the contact-free crushing of concrements in the bodies of living beings |
| DE3536271A1 (en) * | 1985-10-11 | 1987-04-16 | Dornier Medizintechnik | POSITIONING DEVICE FOR AN ELECTRODE |
| DE3543881C1 (en) * | 1985-12-12 | 1987-03-26 | Dornier Medizintechnik | Underwater electrode for non-contact lithotripsy |
-
1987
- 1987-04-28 CU CU06587A patent/CU22021A1/en unknown
-
1988
- 1988-03-07 CA CA000560720A patent/CA1328125C/en not_active Expired - Fee Related
- 1988-03-21 SU SU884355393A patent/SU1746864A3/en active
- 1988-04-20 IT IT47874/88A patent/IT1219544B/en active
- 1988-04-21 GB GB8809441A patent/GB2205503B/en not_active Expired - Lifetime
- 1988-04-22 BR BR8801940A patent/BR8801940A/en not_active Application Discontinuation
- 1988-04-25 FR FR8805476A patent/FR2614520A1/en not_active Withdrawn
- 1988-04-25 AT AT0104588A patent/AT398528B/en not_active IP Right Cessation
- 1988-04-27 JP JP63102842A patent/JPS63281640A/en active Pending
- 1988-04-28 BG BG83935A patent/BG60304B2/en unknown
- 1988-04-28 ES ES8801298A patent/ES2007822A6/en not_active Expired
- 1988-04-28 DE DE3814468A patent/DE3814468A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| IT1219544B (en) | 1990-05-18 |
| JPS63281640A (en) | 1988-11-18 |
| GB2205503A (en) | 1988-12-14 |
| FR2614520A1 (en) | 1988-11-04 |
| CU22021A1 (en) | 1992-06-05 |
| ES2007822A6 (en) | 1989-07-01 |
| GB2205503B (en) | 1991-01-30 |
| BG60304B2 (en) | 1994-07-25 |
| SU1746864A3 (en) | 1992-07-07 |
| BR8801940A (en) | 1988-11-22 |
| AT398528B (en) | 1994-12-27 |
| ATA104588A (en) | 1994-05-15 |
| GB8809441D0 (en) | 1988-05-25 |
| IT8847874A0 (en) | 1988-04-20 |
| DE3814468A1 (en) | 1988-11-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |