# US 11,077,284 B2 · Ureteral and bladder catheters and methods of inducing negative pressure to increase renal perfusion > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,077,284 B2 - Document ID: US11077284B2 - Status: Granted - Kind: B2 - Application number: 16/036,971 - Filed: 2018-07-17 - Published: 2018-11-15 - Granted: 2021-08-03 - Earliest claimed: 2015-07-20 - Assignees: Strataca Systems Limited - Applicants: Strataca Systems Limited - Inventors: John R. Erbey, II; Jacob L. Upperco; Michael Allen Fisher; Patrick William Strane; Lance Michael Black - Web page: https://patentgrep.com/patent/US11077284B2 ## CPC - A61M 27/008: {pre-shaped, for use in the urethral or ureteral tract} - A61M 1/70: {Gravity drainage systems (drainage containers not being adapted for subjection to vacuum A61M1/69)} - A61M 1/73: {comprising sensors or indicators for physical values} - A61M 1/743: {by changing the cross-section of the line, e.g. flow regulating valves (A61M1/7413 takes precedence)} - A61M 1/80: {Suction pumps (A61M1/64, A61M1/71, A61M60/00 take precedence)} - A61M 1/84: {Drainage tubes; Aspiration tips (for negative pressure wound therapy A61M1/90; for surgical cutting instruments A61B17/32)} - A61M 25/0017: {specially adapted for long-term hygiene care, e.g. urethral or indwelling catheters to prevent infections} - A61M 25/0023: {by the form of the lumen, e.g. cross-section, variable diameter} - A61M 25/0026: {Multi-lumen catheters with stationary elements (catheter assemblies comprising a catheter in combination with a guide tube, sheath or sleeve A61M2025/0681; catheters comprising telescoping coaxial elements A61M2025/0175)} - A61M 25/04: in the body, e.g. expansible {(A61M25/10, A61M16/0488 take precedence)} - A61M 25/10: Balloon catheters ({A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02;} inflatable balloons for placing stents or stent-grafts A61F2/958 {; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00}) - A61M 25/1025: {Connections between catheter tubes and inflation tubes} - A61M 39/12: for joining a flexible tube to a rigid attachment - A61F 13/2002: {characterised by the use} - A61F 2013/15146: {for urine collection} - A61M 25/0068: {Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure} - A61M 25/0074: {Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable} - A61M 2025/0213: {where the catheter is attached by means specifically adapted to a part of the human body} - A61M 2202/0496: Urine - A61M 2205/0266: Shape memory materials - A61M 2205/3303: Using a biosensor - A61M 2205/3368: Temperature - A61M 2205/50: with microprocessors or computers - A61M 2205/52: with memories providing a history of measured variating parameters of apparatus or patient - A61M 2205/75: with filters - A61M 2210/1085: Bladder - A61M 2210/1092: Female - A61M 2210/1096: Male - A61M 2230/20: Blood composition characteristics - A61M 2230/50: Temperature - A61M 2230/65: Impedance, e.g. conductivity, capacity - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) ## Abstract Ureteral catheters and assemblies are provided including: a drainage lumen including a proximal portion configured to be positioned in at least a portion of a patient's urethra and a distal portion configured to be positioned in a patient's ureter and/or kidney, the distal portion including a coiled retention portion including at least a first coil having a first diameter and a second coil having a second diameter, the first diameter being less than the second diameter; or wherein the retention portion extends radially outwardly from a portion of the distal end of the drainage lumen portion, the retention portion including a proximal end having a first diameter, a distal end having a second diameter, and a wall and/or surface extending therebetween, the retention portion having a second diameter is greater than the first diameter when deployed; or wherein the retention portion includes a plurality of drainage tubes. ## Claims ### Claim 1 A ureteral catheter comprising a proximal portion and a distal portion, the distal portion comprising a retention portion configured to be positioned in a patient's kidney, wherein a radially outwardly facing portion of the retention portion inhibits kidney tissue and/or ureteral tissue from contacting drainage port(s) on a radially inwardly facing portion of the retention portion when fluid is drawn into the ureteral catheter through the drainage port(s), the outwardly facing portion being essentially free or free of drainage ports. ### Claim 2 (depends on 1) The ureteral catheter according to claim 1, wherein the radially outwardly facing portion of the retention portion is essentially free of drainage port(s). ### Claim 3 (depends on 1) The ureteral catheter according to claim 1, wherein the radially outwardly facing portion of the retention portion is free of drainage port(s). ### Claim 4 (depends on 1) The ureteral catheter according to claim 1, wherein the retention portion comprises at least one coil. ### Claim 5 (depends on 1) The ureteral catheter according to claim 1, wherein the proximal portion is configured to extend outside of the patient's body through the patient's urethra. ### Claim 6 (depends on 1) The ureteral catheter according to claim 1, wherein the proximal portion is configured to be connected to a pump for application of negative pressure through the ureteral catheter. ### Claim 7 (depends on 1) The ureteral catheter according to claim 1, wherein the proximal portion is configured to be positioned in a patient's bladder. ### Claim 8 (depends on 1) The ureteral catheter according to claim 1, wherein the proximal portion is configured to be in fluid communication with a bladder catheter, and wherein the bladder catheter is configured to extend outside of the patient's body through the patient's urethra. ### Claim 9 (depends on 1) The ureteral catheter according to claim 1, wherein the proximal portion is configured to be in fluid communication with a bladder catheter, and wherein the bladder catheter is configured to be connected to a pump for application of negative pressure through both the bladder catheter and the ureteral catheter. ### Claim 10 (depends on 1) The ureteral catheter according to claim 1, wherein, when negative pressure is applied through the ureteral catheter, fluid is drawn into the ureteral catheter through the one or more drainage ports while kidney tissue and/or ureteral tissue is inhibited from contacting the drainage port(s) on the radially inwardly facing portion of the retention portion. ### Claim 11 A system for inducing negative pressure in a portion of a urinary tract of a patient, the system comprising: a ureteral catheter comprising a proximal portion and a distal portion, the distal portion comprising a retention portion configured to be positioned in a patient's kidney, wherein a radially outwardly facing portion of the retention portion inhibits kidney tissue and/or ureteral tissue from contacting drainage port(s) on a radially inwardly facing portion of the retention portion when fluid is drawn into the ureteral catheter through the drainage port(s) the outwardly facing portion being essentially free or free of drainage ports; and a pump for application of negative pressure to the proximal portion of the ureteral catheter, wherein the pump induces negative pressure through the ureteral catheter, which in turn causes fluid from the kidney to be drawn into the ureteral catheter, and then outside the patient's body. ### Claim 12 (depends on 11) The system according to claim 11, wherein the radially outwardly facing portion of the retention portion is essentially free of drainage port(s). ### Claim 13 (depends on 11) The system according to claim 11, wherein the radially outwardly facing portion of the retention portion is free of drainage port(s). ### Claim 14 (depends on 11) The system according to claim 11, wherein the retention portion comprises at least one coil. ### Claim 15 (depends on 11) The system according to claim 11, wherein the proximal portion is configured to extend outside of the patient's body through the patient's urethra. ### Claim 16 A system for inducing negative pressure in a portion of a urinary tract of a patient, the system comprising: (a) a ureteral catheter comprising a proximal portion and a distal portion, the distal portion comprising a retention portion configured to be positioned in a patient's kidney, wherein a radially outwardly facing portion of the retention portion inhibits kidney tissue and/or ureteral tissue from contacting drainage port(s) on a radially inwardly facing portion of the retention portion when fluid is drawn into the ureteral catheter through the drainage port(s) the outwardly facing portion being essentially free or free of drainage ports; (b) a bladder catheter comprising a distal portion in the patient's bladder and a proximal portion for application of negative pressure, the proximal portion extending outside the patient's body; and (c) a pump external to the patient's body for application of negative pressure at the proximal end of the bladder catheter, wherein the pump induces negative pressure through both the bladder catheter and the ureteral catheter, which in turn causes fluid from the kidney to be drawn into the ureteral catheter, through both the ureteral catheter and the bladder catheter, and then outside the patient's body. ### Claim 17 (depends on 16) The system according to claim 16, wherein the radially outwardly facing portion of the retention portion is essentially free of drainage port(s). ### Claim 18 (depends on 16) The system according to claim 16, wherein the radially outwardly facing portion of the retention portion is free of drainage port(s). ### Claim 19 (depends on 16) The system according to claim 16, wherein the retention portion comprises at least one coil. ### Claim 20 (depends on 16) The system according to claim 16, wherein the proximal portion of the bladder catheter extends outside of the patient's body through the patient's urethra. ### Claim 21 A method for extracting urine from a ureter and/or kidney of a patient for effecting interstitial pressure in the kidney, the method comprising: positioning a distal end of a ureteral catheter at a fluid collection position within a patient's ureter and/or kidney, the catheter comprising a proximal portion and a distal portion, the distal portion comprising a retention portion configured to be positioned in a patient's kidney, wherein a radially outwardly facing portion of the retention portion inhibits kidney tissue and/or ureteral tissue from contacting drainage port(s) on a radially inwardly facing portion of the retention portion when fluid is drawn into the ureteral catheter through the drainage port(s), the outwardly facing portion being essentially free or free of drainage ports; and inducing a negative pressure through the ureteral catheter to extract urine from the patient, thereby altering interstitial pressure within the patient's kidney.