CA1246414A - Catheter with removable connector - Google Patents
Catheter with removable connectorInfo
- Publication number
- CA1246414A CA1246414A CA000494533A CA494533A CA1246414A CA 1246414 A CA1246414 A CA 1246414A CA 000494533 A CA000494533 A CA 000494533A CA 494533 A CA494533 A CA 494533A CA 1246414 A CA1246414 A CA 1246414A
- Authority
- CA
- Canada
- Prior art keywords
- catheter
- shaft
- connector
- valve
- drainage
- 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
Links
Landscapes
- Media Introduction/Drainage Providing Device (AREA)
Abstract
CATHETER WITH REMOVABLE CONNECTOR
ABSTRACT OF THE DISCLOSURE
A catheter comprising, an elongated shaft having a drainage lumen extending through the shaft, and a hollow connec-tor removably connected to a proximal end of the shaft.
ABSTRACT OF THE DISCLOSURE
A catheter comprising, an elongated shaft having a drainage lumen extending through the shaft, and a hollow connec-tor removably connected to a proximal end of the shaft.
Description
~6~
BACKGROUND OF THE INVENTION
The present invention relates to catheters.
When the ureter or kidney of a patient is ob-structed by a stone, it is necessary to stabilize the kidney through drainage because an increase of pressure in the kidney could result in loss of the kidney. Such a proced-ure is called a nephrostomy procedure. First, a small gauge hollow needle is passed under radiologic vision until a tip of the needle is located in the renal calyces to obtain access to the kidney chamber. ~ith the needle in place, a flexible elongated guide wire is passed through the needle, and the needle is removed with the guide wire in place to establish a path to the kidney. Next, a plu-rality of dilators are inserted over the guide wire in order to increase the size of the path to the kidney, and the dilators are then removed. In the past, a catheter is then placed over the guide wire, with the catheter havlng a pig tail which is located in the kidney. Although nephrostomy has been completed in this manner, it is de-sired to improve the procedure.
SUMMARY OF THE INVENTION
A principal feature of the present invention is the provision of an improved catheter for performing a nephrostomy procedure.
According to one aspect of the present inven-tion, a nephrostomy catheter comprises an elongated shaft having a drainage lumen extending through the shaft, wherein the shaft includes an inflation lumen extending along the shaft, the catheter includes an elastic sleeve bonded in circumferential zones to a distal portion of the shaft, and an inflation valve of relatively small diameter perma-nently attached to the shaft and communicating with the ~6~
inflation lumen; said catheter having a hollow connector removably connected to a proximal end of the sha~t, an adapter removably received in the connector; and a drain-ase tube fixedly attached to the adapter.
Yet another feature of the present invention is that the connector may be removed from the shaft, and a scope sheath may be passed over the catheter and valve.
According to a further aspect of the present invention there is provided a method of performins a nephrostomy procedure with a catheter having a distal in-flatable sleeve, a proximal removable connector, and a proximal inflation valve, and with a scope having a sheath and a telescope, comprising the steps of: inserting a catheter into a patient's body until a distal portion of the catheter is located in the renal calyces; inflating a sleeve of the catheter in the renal calyces; removing a proximal connector of the catheter; passing a sheath of a scope over an inflation valve of the catheter and the catheter while the catheter maintains a path to the kidney;
~ deflating the sleeve; removing the catheter; and inserting a telescope through the sheathO
Further features will become more fully apparent in the following description of the embodiments of this invention and from the appended claims.
DESCRIPTION OF THE DRAWINGS
In the drawings:
Figure 1 is a diagrammatic view of a kidney of a patient;
Figure 2 is a fragmentary elevational view of a needle for performing a nephrostomy procedure;
Figure 3 is a fragmentary elevational view of a guide wire for performing the procedure;
~2~
Figure 4 is a fragmentary elevational view of a stylet for performing the procedure;
Figure 5 is a fragmentary elevational view of a scope for use in the procedure;
Figure 6 is a perspective view of a catheter for performing the nephrostomy procedure; and Figure 7 is a fragmentary sectional view of the catheter of Figure 6.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
A kidney K of a patient having a renal calyces C
defining a cavity in the kidney K is shown in Figure l.
With reference to Figure 2, a hollow needle 10 is shown having a sharp distal tip 12 and a proximal hub 14. With reference to Figure 3, a guide wire `~
~2~6~
16 of flexible material ls illustrated havlng a distal end 18 and a proximal end 20.
A stylet 22 is shown in Fig. 4 having a hollow rigid tube 24. The tube 24 has a distal end 26 and a proximal end 28.
As shown, a flexible plastic tubular section 30 is frictionally received on the proximal end 28 of the tube 24.
A scope 32 for use in a nephrostomy procedure is illus-trated in Fig. 5. The scope 32 has an elongated outer hollow sheath 34, and an inner optic telescope 36 removably received in the sheath 34.
A cathe-ter 38 of the present invention is illustrated in Figs. 6 and 7. The catheter 38 has an elongated elastic shaft 40 having a drainage lumen 42 extending through the shaft 40. The shaft 40 has a distal end 44 and a proximal end 46. The shaft 40 also has an inflation lumen 48 extending through a wall of the shaft 40.
As shown, the catheter 38 has an elastic sleeve 50 bonded in circumferential zones 52 and 54 to a distal portion of the shaft 40, such that the sleeve 50 defines a cavity 56 beneath ~o the sleeve 50 communicating with the inflation lumen 48.
The catheter 38 has a distal tip 58 bonded to the dis-tal end 44 of the shaft 40. The tip has a distal opening 60 extending through the tip 58 and communicating wlth the drainage lumen 42 for a purpose which will be described below. The tip 58 also has a plurality of drainage eyes 62 ex-tending through the tip 58 and communicating with the drainage lumen 42.
As shown, the catheter 38 has a hollow proximal connec-tor 64 removably connected to the proximal end 46 of the shaft 40. In a preferred form, a distal end 66 of the connector 64 is received in a proximal portion of the drainage lumen 42, with the distal end 6~ frictionally engaging against the inner wall of the shaft 40 to releasably retain the connec~or 64 in place.
In this configuration, the connector 64 defines a continuation of the drainage lumen 42.
The catheter 38 has an inflation valve 68 of relatively small diameter, such as less than the diameter of the shaft 40, with the valve 68 being of known type which actuates responsive to contact by the tip of a syringe. The valve 68 is connected to the shaft 40 by a hollow tubular section 70 with a distal end 10 -72 of the tubular section 70 being connected by a hollow tubular section 73 to the inflation lumen 48, and a proximal end 74 is connected to the valve 68, such that the tubular section 70 establishes communication between the valve 68 and the inflation lumen 48. As shown, in a preferred form, the valve 68 is located proximal the attached connector 64.
In use, the needle 10 is passed through the body of a patient under radiologic vision until the tip 12 of the needle 10 is located in the renal calyces C to obtain access to the kidney chamber. With the needle 10 in place, the guide wire 16 is passed through the needle 10, and the needle is removed with the guide wlre in place to establish a path to the kidney K.
Next, a plurality of dilators are inserted over the guide wire in order to increase the size of the path to the kidney, and the dilators are then removed.
The stylet 22 is then inserted through the connector 64 into the drainage lumen 42, until the distal end 26 of the stylet 22 contacts the tip 58. Next, the guide wire 16 is passed through the opening 60 and through the stylet 22, and the cathe-ter 38 is advanced over the guide wire 16 with the stylet 22 supplying rigidity to the catheter 38 for the insertion proce-dure until a distal end of the catheter 38 is located in the renal calyces. The sleeve 50 of the catheter 38 is then inflated S
~Z~6 ~
in the renal calyces C through use of the syringe to contact and a~tuate the valve 68 and pump a suitable fluid through the valve 68 and inflation lumen 48 into the cavity 56 to inflate the sleeve 50. After inflation of the sleeve 50, the stylet 22 is S removed from the catheter 38. Finally, the connector 64 is attached to the upstream portion of a drainage tube connected to a drainage bag, and urine drains through the drainage lumen 42 and drainage tùbe into the drainage bag for collection therein.
In the event that the physician would desire to view the inside of the kidney, the scope 32 is used in the procedure.
First, the connector 64 is removed from the shaft 40, and the sheath 34 is advanced over the valve 68 and over the catheter shaft 40. Next, the sleeve 50 is deflated using a syringe, and the catheter 38 is removed through the sheath 34, after whi.ch the optic telescope 36 is inserted through the sheath 34 to view the inside of the kidney K. In accordance with the present invention, the catheter 38 facilitates insertion of the sheath 34 of the scope 32, and it is not necessary to redefine the tract to the kidney K.
When viewing of the kidney by the scope 32 is completed, the telescope 36 is removed from the sheath 34, and the catheter 38 is inserted through the sheath 34 until the distal portion of the catheter 38 is located in the renal calyces. Next, the sheath 34 is removed over the catheter shaft 40 and valve 68 with the connector 64 removed from the shaft 40. After removal of the sheath 34, the connector 64 is again attached to the shaft 40, the sleeve 50 is inflated in the renal calyces, and the drainage tube is attached to the connector 64 for continued drainage of the kidney K.
According to a method of performing the nephrostomy procedure of the present invention, a catheter is inserted into a patient's body until a distal portion of the catheter ls ~2~
located in the renal calyces, a sleeve of the catheter is inflated in the renal calyces, a proximal connector of the cath-eter is removed, and a sheath of a scope is inserted over an inflation valve of the catheter and over the catheter.
The foregoing detailed description is given for clear-ness of understanding only, and no unnecessary limitations should be understood therefrom, as modifications will be obvious to those skilled in the art.
BACKGROUND OF THE INVENTION
The present invention relates to catheters.
When the ureter or kidney of a patient is ob-structed by a stone, it is necessary to stabilize the kidney through drainage because an increase of pressure in the kidney could result in loss of the kidney. Such a proced-ure is called a nephrostomy procedure. First, a small gauge hollow needle is passed under radiologic vision until a tip of the needle is located in the renal calyces to obtain access to the kidney chamber. ~ith the needle in place, a flexible elongated guide wire is passed through the needle, and the needle is removed with the guide wire in place to establish a path to the kidney. Next, a plu-rality of dilators are inserted over the guide wire in order to increase the size of the path to the kidney, and the dilators are then removed. In the past, a catheter is then placed over the guide wire, with the catheter havlng a pig tail which is located in the kidney. Although nephrostomy has been completed in this manner, it is de-sired to improve the procedure.
SUMMARY OF THE INVENTION
A principal feature of the present invention is the provision of an improved catheter for performing a nephrostomy procedure.
According to one aspect of the present inven-tion, a nephrostomy catheter comprises an elongated shaft having a drainage lumen extending through the shaft, wherein the shaft includes an inflation lumen extending along the shaft, the catheter includes an elastic sleeve bonded in circumferential zones to a distal portion of the shaft, and an inflation valve of relatively small diameter perma-nently attached to the shaft and communicating with the ~6~
inflation lumen; said catheter having a hollow connector removably connected to a proximal end of the sha~t, an adapter removably received in the connector; and a drain-ase tube fixedly attached to the adapter.
Yet another feature of the present invention is that the connector may be removed from the shaft, and a scope sheath may be passed over the catheter and valve.
According to a further aspect of the present invention there is provided a method of performins a nephrostomy procedure with a catheter having a distal in-flatable sleeve, a proximal removable connector, and a proximal inflation valve, and with a scope having a sheath and a telescope, comprising the steps of: inserting a catheter into a patient's body until a distal portion of the catheter is located in the renal calyces; inflating a sleeve of the catheter in the renal calyces; removing a proximal connector of the catheter; passing a sheath of a scope over an inflation valve of the catheter and the catheter while the catheter maintains a path to the kidney;
~ deflating the sleeve; removing the catheter; and inserting a telescope through the sheathO
Further features will become more fully apparent in the following description of the embodiments of this invention and from the appended claims.
DESCRIPTION OF THE DRAWINGS
In the drawings:
Figure 1 is a diagrammatic view of a kidney of a patient;
Figure 2 is a fragmentary elevational view of a needle for performing a nephrostomy procedure;
Figure 3 is a fragmentary elevational view of a guide wire for performing the procedure;
~2~
Figure 4 is a fragmentary elevational view of a stylet for performing the procedure;
Figure 5 is a fragmentary elevational view of a scope for use in the procedure;
Figure 6 is a perspective view of a catheter for performing the nephrostomy procedure; and Figure 7 is a fragmentary sectional view of the catheter of Figure 6.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
A kidney K of a patient having a renal calyces C
defining a cavity in the kidney K is shown in Figure l.
With reference to Figure 2, a hollow needle 10 is shown having a sharp distal tip 12 and a proximal hub 14. With reference to Figure 3, a guide wire `~
~2~6~
16 of flexible material ls illustrated havlng a distal end 18 and a proximal end 20.
A stylet 22 is shown in Fig. 4 having a hollow rigid tube 24. The tube 24 has a distal end 26 and a proximal end 28.
As shown, a flexible plastic tubular section 30 is frictionally received on the proximal end 28 of the tube 24.
A scope 32 for use in a nephrostomy procedure is illus-trated in Fig. 5. The scope 32 has an elongated outer hollow sheath 34, and an inner optic telescope 36 removably received in the sheath 34.
A cathe-ter 38 of the present invention is illustrated in Figs. 6 and 7. The catheter 38 has an elongated elastic shaft 40 having a drainage lumen 42 extending through the shaft 40. The shaft 40 has a distal end 44 and a proximal end 46. The shaft 40 also has an inflation lumen 48 extending through a wall of the shaft 40.
As shown, the catheter 38 has an elastic sleeve 50 bonded in circumferential zones 52 and 54 to a distal portion of the shaft 40, such that the sleeve 50 defines a cavity 56 beneath ~o the sleeve 50 communicating with the inflation lumen 48.
The catheter 38 has a distal tip 58 bonded to the dis-tal end 44 of the shaft 40. The tip has a distal opening 60 extending through the tip 58 and communicating wlth the drainage lumen 42 for a purpose which will be described below. The tip 58 also has a plurality of drainage eyes 62 ex-tending through the tip 58 and communicating with the drainage lumen 42.
As shown, the catheter 38 has a hollow proximal connec-tor 64 removably connected to the proximal end 46 of the shaft 40. In a preferred form, a distal end 66 of the connector 64 is received in a proximal portion of the drainage lumen 42, with the distal end 6~ frictionally engaging against the inner wall of the shaft 40 to releasably retain the connec~or 64 in place.
In this configuration, the connector 64 defines a continuation of the drainage lumen 42.
The catheter 38 has an inflation valve 68 of relatively small diameter, such as less than the diameter of the shaft 40, with the valve 68 being of known type which actuates responsive to contact by the tip of a syringe. The valve 68 is connected to the shaft 40 by a hollow tubular section 70 with a distal end 10 -72 of the tubular section 70 being connected by a hollow tubular section 73 to the inflation lumen 48, and a proximal end 74 is connected to the valve 68, such that the tubular section 70 establishes communication between the valve 68 and the inflation lumen 48. As shown, in a preferred form, the valve 68 is located proximal the attached connector 64.
In use, the needle 10 is passed through the body of a patient under radiologic vision until the tip 12 of the needle 10 is located in the renal calyces C to obtain access to the kidney chamber. With the needle 10 in place, the guide wire 16 is passed through the needle 10, and the needle is removed with the guide wlre in place to establish a path to the kidney K.
Next, a plurality of dilators are inserted over the guide wire in order to increase the size of the path to the kidney, and the dilators are then removed.
The stylet 22 is then inserted through the connector 64 into the drainage lumen 42, until the distal end 26 of the stylet 22 contacts the tip 58. Next, the guide wire 16 is passed through the opening 60 and through the stylet 22, and the cathe-ter 38 is advanced over the guide wire 16 with the stylet 22 supplying rigidity to the catheter 38 for the insertion proce-dure until a distal end of the catheter 38 is located in the renal calyces. The sleeve 50 of the catheter 38 is then inflated S
~Z~6 ~
in the renal calyces C through use of the syringe to contact and a~tuate the valve 68 and pump a suitable fluid through the valve 68 and inflation lumen 48 into the cavity 56 to inflate the sleeve 50. After inflation of the sleeve 50, the stylet 22 is S removed from the catheter 38. Finally, the connector 64 is attached to the upstream portion of a drainage tube connected to a drainage bag, and urine drains through the drainage lumen 42 and drainage tùbe into the drainage bag for collection therein.
In the event that the physician would desire to view the inside of the kidney, the scope 32 is used in the procedure.
First, the connector 64 is removed from the shaft 40, and the sheath 34 is advanced over the valve 68 and over the catheter shaft 40. Next, the sleeve 50 is deflated using a syringe, and the catheter 38 is removed through the sheath 34, after whi.ch the optic telescope 36 is inserted through the sheath 34 to view the inside of the kidney K. In accordance with the present invention, the catheter 38 facilitates insertion of the sheath 34 of the scope 32, and it is not necessary to redefine the tract to the kidney K.
When viewing of the kidney by the scope 32 is completed, the telescope 36 is removed from the sheath 34, and the catheter 38 is inserted through the sheath 34 until the distal portion of the catheter 38 is located in the renal calyces. Next, the sheath 34 is removed over the catheter shaft 40 and valve 68 with the connector 64 removed from the shaft 40. After removal of the sheath 34, the connector 64 is again attached to the shaft 40, the sleeve 50 is inflated in the renal calyces, and the drainage tube is attached to the connector 64 for continued drainage of the kidney K.
According to a method of performing the nephrostomy procedure of the present invention, a catheter is inserted into a patient's body until a distal portion of the catheter ls ~2~
located in the renal calyces, a sleeve of the catheter is inflated in the renal calyces, a proximal connector of the cath-eter is removed, and a sheath of a scope is inserted over an inflation valve of the catheter and over the catheter.
The foregoing detailed description is given for clear-ness of understanding only, and no unnecessary limitations should be understood therefrom, as modifications will be obvious to those skilled in the art.
Claims (4)
1. A nephrostomy catheter, comprising:
an elongated shaft having a drainage lumen extending through the shaft, wherein the shaft includes an inflation lumen extending along the shaft, the catheter includes an elastic sleeve bonded in circumferential zones to a distal portion of the shaft, and an inflation valve of relatively small diameter permanently attached to the shaft and communicating with the inflation lumen;
said catheter having a hollow connector removably connected to a proximal end of the shaft;
an adapter removably received in the connector; and a drainage tube fixedly attached to the adapter.
an elongated shaft having a drainage lumen extending through the shaft, wherein the shaft includes an inflation lumen extending along the shaft, the catheter includes an elastic sleeve bonded in circumferential zones to a distal portion of the shaft, and an inflation valve of relatively small diameter permanently attached to the shaft and communicating with the inflation lumen;
said catheter having a hollow connector removably connected to a proximal end of the shaft;
an adapter removably received in the connector; and a drainage tube fixedly attached to the adapter.
2. The catheter of claim 1 wherein a distal end of the connector is removably received in a proximal end of the drainage lumen.
3. The catheter of claim 1 wherein the valve is located proximal the connector.
4. The catheter of claim 3 including a hollow tubular section communicating between the inflation lumen and valve.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US68305584A | 1984-12-18 | 1984-12-18 | |
| US683,055 | 1984-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1246414A true CA1246414A (en) | 1988-12-13 |
Family
ID=24742378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000494533A Expired CA1246414A (en) | 1984-12-18 | 1985-11-04 | Catheter with removable connector |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1246414A (en) |
-
1985
- 1985-11-04 CA CA000494533A patent/CA1246414A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |