Intra-cavitary ultrasound medical system and method

• US 20050197577A1
• Filed: 03/08/2004
• Published: 09/08/2005
• Est. Priority Date: 03/08/2004
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Inventors: Makin, Inder Raj S., Slayton, Michael H., Barthe, Peter G., Avidor, Yoav
• Granted Patent: US 7,247,141 B2
• Time in Patent Office: Days
• US Class Current: 600/439
• CPC Class Codes: A61B 17/2202 the ultrasound transducer being inside patient's body at the distal end of the catheter
• CPC Class Codes: A61B 17/42 Gynaecological or obstetrical instruments or methods ligaturing clamps or clips for the umbilical cord A61B17/122; curettage A61B17/320708; dilators A61M29/00
• CPC Class Codes: A61B 2017/2253 using a coupling gel or liquid
• CPC Class Codes: A61B 2017/4216 Operations on uterus, e.g. endometrium
• CPC Class Codes: A61B 8/12 in body cavities or body tracts, e.g. by using catheters catheters per se A61M25/00
• CPC Class Codes: A61B 8/445 Details of catheter construction
• CPC Class Codes: A61B 8/4483 characterised by features of the ultrasound transducer

Abstract

A method for medically employing ultrasound within a body cavity of a patient. An end effector is obtained having a medical ultrasound transducer assembly. A biocompatible hygroscopic substance is obtained having a non-expanded anhydrous state and having an expanded and fluidly-loculated hydrated state. The end effector, including the transducer assembly, and the substance in substantially its anhydrous state are inserted into a body cavity (such as endoscopically inserted into a uterus) of a patient. The transducer assembly is used to medically image and/or medically treat patient tissue (such as stopping blood flow to, and/or ablating, a uterine fibroid). A system for medically employing ultrasound includes the end effector and the substance. In another system, the end effector includes the substance. The substance in its hydrated state expands inside the body cavity providing acoustic coupling between the wall of the body cavity and the transducer assembly.

Claims

1. A method for medically employing ultrasound within a body cavity of a patient comprising the steps of:

a) obtaining an end effector having a medical ultrasound transducer assembly;

b) obtaining a biocompatible hygroscopic substance having a non-expanded anhydrous state and having an expanded and fluidly-loculated hydrated state;

c) inserting the end effector including the transducer assembly into the body cavity of the patient;

d) inserting the substance in substantially its anhydrous state into the body cavity; and

e) after steps a) through d), medically imaging and/or medically treating patient tissue with ultrasound from the transducer assembly.

2. The method of claim 1, wherein the substance comprises polyvinyl alcohol.

3. The method of claim 2, wherein the substance consists essentially of polyvinyl alcohol.

4. The method of claim 1, wherein step c) endoscopically inserts the end effector into the body cavity of the patient, and wherein step d) endoscopically inserts the substance into the body cavity.

5. The method of claim 4, wherein the body cavity is the uterus.

6. The method of claim 5, wherein step e) medically treats a uterine artery or a branch thereof which supplies blood to a portion of the uterus with ultrasound from the transducer assembly to substantially seal the blood vessel to substantially stop the supply of blood to the portion of the uterus from the uterine artery or the branch thereof.

7. The method of claim 6, wherein the portion of the uterus includes a uterine fibroid.

8. The method of claim 7, also including the step of medically treating the uterine fibroid with ultrasound from the transducer assembly to ablate at least a part of the uterine fibroid.

9. The method of claim 5, wherein step e) medically treats the uterine fibroid with ultrasound from the transducer assembly to ablate at least a part of the uterine fibroid.

10. The method of claim 5, wherein step e) medically treats the endometrium lining of the uterus with ultrasound from the transducer assembly to ablate a desired thickness of at least a portion of the endometrium lining to substantially stop abnormal uterine bleeding from the endometrium lining.

11. A system for medically employing ultrasound within a body cavity of a patient comprising:

a) an end effector having a medical ultrasound transducer assembly, wherein the end effector including the transducer assembly is insertable into the body cavity of the patient; and

b) a biocompatible hygroscopic substance having a non-expanded anhydrous state and having an expanded and fluidly-loculated hydrated state, wherein the substance is insertable in substantially its anhydrous state into the body cavity;

wherein the medical transducer assembly is adapted to medically image and/or medically treat patient tissue with ultrasound.

12. The system of claim 11, wherein the substance comprises polyvinyl alcohol.

13. The system of claim 11, wherein the end effector is adapted for endoscopic insertion into the body cavity.

14. The system of claim 12, wherein the body cavity is the uterus, and wherein the end effector is a rotatable and articulated end effector.

15. A system for medically employing ultrasound within a body cavity of a patient comprising an end effector, wherein the end effector includes a medical ultrasound transducer assembly and a biocompatible hygroscopic substance, wherein the end effector including the transducer assembly is insertable into the body cavity of the patient, wherein the transducer assembly includes an ultrasound transducer adapted to medically image and/or medically treat patient tissue, and wherein the substance has a non-expanded anhydrous state, has an expanded and fluidly-loculated hydrated state, and is disposed in substantially its anhydrous state on at least a portion of the outside of the transducer assembly.

16. The system of claim 15, wherein the substance comprises polyvinyl alcohol.

17. The system of claim 15, wherein the ultrasound transducer is disposed on the outside of the transducer assembly, and wherein the substance in substantially its anhydrous state is disposed on the ultrasound transducer.

18. The system of claim 15, wherein the transducer assembly includes a non-expandable sheath surrounding the ultrasound transducer and is adapted for receiving non-bodily fluid between the ultrasound transducer and the sheath, and wherein the substance in substantially its anhydrous state is disposed on at least a portion of the sheath.

19. The system of claim 15, wherein the end effector is adapted for endoscopic insertion into the body cavity.

20. The system of claim 19, wherein the body cavity is the uterus, and wherein the end effector is a rotatable and articulated end effector.