US4997435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Percutaneous catheter with encapsulating receptacle
Assignee: Methodist Hospital
•
Filing: 1989-09-25
•
Granted: 1991-03-05
•
Expires: 2009-09-25
Abstract
Abstract A percutaneous catheter with encapsulating receptacle comprises a first catheter having a proximal and distal end, several struts attached to the distal end of the first catheter and extending distally therefrom in a cup-shaped form, a second, inner catheter received within the first, and a pocket-shaped sheath received between the several struts and opening in the distal direction, the sheath having a proximal portion secured to the distal end of the second, inner catheter, and a distal portion secured to the distal ends of the several struts, whereby rotation of the first catheter, relative the second catheter, twists and closes the distal end of the sheath. A third, outer catheter is also disclosed within which the first and second catheters, and associated struts and sheath, are receivable. Also disclosed is a method for positioning the catheter adjacent an object, or receiving the object within the sheath and enclosing the sheath about the object to facilitate treatment of the object.
Inventors
- 👤 Robert J. Demeter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:14
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/22; A61B17/221; A61B2017/22082; A61B2017/22084; A61B2017/2215; A61B17/30; A61B2017/303
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
197 words
A percutaneous catheter with encapsulating receptacle which comprises: a first catheter having a proximal end and a distal end; several struts having proximal and distal ends, the proximal ends of said struts being secured to the distal end of said first catheter, said struts extending axially beyond the distal end of said first catheter, said struts in a normal, substantially untensioned condition defining a cup-shaped form opening in the distal direction; a second, inner catheter received within said first catheter, said second catheter having a proximal end and a distal end; and a pocket-shaped sheath received between said several struts and opening in the distal direction, said sheath having a proximal portion secured about the distal end of said second cathether, said sheath having a distal portion secured to the distal ends of said several struts, said sheath having a first condition in which said first catheter is non-rotated relative said second catheter, said struts are in a normal, substantially untensioned condition and said sheath defines a pocket-shaped opening, and said sheath having a second condition in which said first catheter is rotated relative said second catheter and the distal end of said sheath is twisted closed.
Claim 2
Dependent Claim
197 words
A percutaneous catheter with encapsulating receptacle which comprises: a first catheter having a proximal end and a distal end; several struts having proximal and distal ends, the proximal ends of said struts being secured to the distal end of said first catheter, said struts extending axially beyond the distal end of said first catheter, said struts in a normal, substantially untensioned condition defining a cup-shaped form opening in the distal direction; a second, inner catheter received within said first catheter, said second catheter having a proximal end and a distal end; and a pocket-shaped sheath received between said several struts and opening in the distal direction, said sheath having a proximal portion secured about the distal end of said second cathether, said sheath having a distal portion secured to the distal ends of said several struts, said sheath having a first condition in which said first catheter is non-rotated relative said second catheter, said struts are in a normal, substantially untensioned condition and said sheath defines a pocket-shaped opening, and said sheath having a second condition in which said first catheter is rotated relative said second catheter and the distal end of said sheath is twisted closed.
Claim 3
Dependent Claim
33 words
The invention of claim 1 in which each of said struts consists of a flat strip having a rectangular cross-section with the shorter dimension oriented in a direction radial to said first catheter.
Claim 4
Dependent Claim
12 words
The invention of claim 1 and which includes at least four struts.
Claim 5
Dependent Claim
10 words
The invention of claim 3 and which includes eight struts.
Claim 6
Dependent Claim
28 words
The invention of claim 1 in which each of said struts in a normal, substantially untensioned condition has an arcuate, concave shape facing inward toward said first catheter.
Claim 7
Dependent Claim
33 words
The invention of claim 5 in which each of said struts consists of a flat strip having a rectangular cross-section with the shorter dimension oriented in a direction radial to said first catheter.
Claim 8
Dependent Claim
12 words
The invention of claim 5 and which includes at least four struts.
Claim 9
Dependent Claim
10 words
The invention of claim 7 and which includes eight struts.
Claim 10
Dependent Claim
33 words
The invention of claim 8 in which each of said struts consists of a flat strip having a rectangular cross-section with the shorter dimension oriented in a direction radial to said first catheter.
Claim 11
Dependent Claim
29 words
The invention of claim 1 in which said sheath defines an interior and in which said second catheter defines a central lumen communicating with the interior of said sheath.
Claim 12
Dependent Claim
97 words
The invention of claim 1 and which further includes a third, outer catheter within which said first and second catheters are received, said third catheter including a proximal end and a distal end, the distal ends of said first and second catheters being received within said third catheter when in the second, rotated position with said struts and sheath twisted and closed, the distal ends of said first and second catheters extending outwardly of the distal end of said third catheter when in the first position with said struts and sheath being opened in the distal direction.
Claim 13
Dependent Claim
28 words
The invention of claim 11 in which each of said struts in a normal, substantially untensioned condition has an arcuate, concave shape facing inward toward said first catheter.
Claim 14
Dependent Claim
33 words
The invention of claim 12 in which each of said struts consists of a flat strip having a rectangular cross-section with the shorter dimension oriented in a direction radial to said first catheter.
Claim 15
Dependent Claim
12 words
The invention of claim 13 and which includes at least four struts.
Claim 16
Dependent Claim
10 words
The invention of claim 14 and which includes eight struts.
Claim 17
Dependent Claim
33 words
The invention of claim 15 in which each of said struts consists of a flat strip having a rectangular cross-section with the shorter dimension oriented in a direction radial to said first catheter.
Claim 18
Independent Claim
179 words
A method for encapsulating an object which comprises the steps of: a. providing an encapsulating receptacle which includes a first catheter having a proximal end and a distal end, several struts having proximal ends secured to the distal end of the first catheter and also having distal ends, the struts extending axially beyond the distal end of the first catheter, the struts in a normal, substantially untensioned condition defining a cup-shaped form opening in the distal direction, a second, inner catheter received within the first catheter, the second catheter having a proximal end and a distal end, and a pocket-shaped sheath received between the several struts and opening in the distal direction, the sheath having a proximal portion secured about the distal end of the second catheter, the sheath having a distal portion secured to the distal ends of the several struts; b. positioning the encapsulating receptacle adjacent to the object; c. receiving the object within the sheath of said receptacle; and d. rotating the first catheter relative the second catheter to close the distal end of the sheath.
Claim 19
Independent Claim
179 words
A method for encapsulating an object which comprises the steps of: a. providing an encapsulating receptacle which includes a first catheter having a proximal end and a distal end, several struts having proximal ends secured to the distal end of the first catheter and also having distal ends, the struts extending axially beyond the distal end of the first catheter, the struts in a normal, substantially untensioned condition defining a cup-shaped form opening in the distal direction, a second, inner catheter received within the first catheter, the second catheter having a proximal end and a distal end, and a pocket-shaped sheath received between the several struts and opening in the distal direction, the sheath having a proximal portion secured about the distal end of the second catheter, the sheath having a distal portion secured to the distal ends of the several struts; b. positioning the encapsulating receptacle adjacent to the object; c. receiving the object within the sheath of said receptacle; and d. rotating the first catheter relative the second catheter to close the distal end of the sheath.
Claim 20
Dependent Claim
49 words
The method of claim 17 in which the second catheter defines a central lumen communicating with the interior of the sheath, said receiving of step c. comprising extending an object-grasping device through the central lumen of the second catheter, grasping the object, and pulling the object into the sheath.
Claim 21
Dependent Claim
94 words
The method of claim 18 in which said positioning of step b. comprises inserting the first and second catheters through a third, outer catheter, the distal ends of said first and second catheters being received within the third catheter when in the first, rotated position with the struts and sheath twisted and closed and received within the third catheter, the distal ends of the first and second catheters extending outwardly of the distal end of the third catheter when in the second position with the struts and sheath being opened in the distal direction.
Claim 22
Dependent Claim
49 words
The method of claim 19 in which the second catheter defines a central lumen communicating with the interior of the sheath, said receiving of step c. comprising extending an object-grasping device through the central lumen of the second catheter, grasping the object, and pulling the object into the sheath.
Claim 23
Dependent Claim
35 words
The method of claim 20 in which the second catheter defines a central lumen communicating with the interior of the sheath, and which further includes the step e. of passing material through the central lumen.
Claim 24
Dependent Claim
25 words
The method of claim 21 in which step e. comprises passing material through the central lumen and into the sheath to act upon the object.
Claim 25
Dependent Claim
20 words
The method of claim 22 in which step e. comprises passing the object from the sheath through the central lumen.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-03-04 | 1994-09-03 | 1995-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-04 | 1998-09-03 | 1999-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-04 | 2002-09-03 | 2003-03-05 | $7700.00 | Window Closed / Lapsed |