Tissue sampling and removal apparatus and method
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61B-010/00
A61B-017/32
출원번호
UP-0859693
(2004-06-03)
등록번호
US-7513877
(2009-07-01)
발명자
/ 주소
Viola, Frank J.
출원인 / 주소
Tyco Healthcare Group LP
인용정보
피인용 횟수 :
98인용 특허 :
245
초록▼
A tissue sampling device (10) for retrieving one or more tissue samples from a patient is either handheld or mounted to a moveable carriage (184) and advanced so that the needle tip (152) is introduced into the patient. The needle tip (152) is advanced until the tissue receiving basket (154) reaches
A tissue sampling device (10) for retrieving one or more tissue samples from a patient is either handheld or mounted to a moveable carriage (184) and advanced so that the needle tip (152) is introduced into the patient. The needle tip (152) is advanced until the tissue receiving basket (154) reaches the tissue sample target zone (190). Vacuum pressure is supplied to the basket (154) via a vacuum tube (144) so that tissue to be sampled is drawn into the basket (154). The cutter (42) is rotated and advanced linearly to cut a tissue sample (212) which is then retrieved by retracting the needle (40).
대표청구항▼
What is claimed is: 1. A tissue removal device for selectively removing one or more tissue portions from a medical patient, the device comprising: a housing; a cutter rotatably and axially slidably mounted within the housing, the cutter includes an elongated hollow tube having a distal end defining
What is claimed is: 1. A tissue removal device for selectively removing one or more tissue portions from a medical patient, the device comprising: a housing; a cutter rotatably and axially slidably mounted within the housing, the cutter includes an elongated hollow tube having a distal end defining a cutting edge; a needle slidably disposed within the cutter, the needle includes a piercing tip and defines a tissue receiving section adjacent the piercing tip, the needle being configured to deliver suction to the tissue receiving section to draw a portion of tissue therein, wherein the cutter selectively severs the portion of tissue while it is held in the tissue receiving section; and a single drive cable operatively attached at one end to the housing, wherein the drive cable moves the cutter causing the cutter to sever the portion of tissue and selectively moves the needle relative to the housing. 2. The device according to claim 1, wherein the cutter includes a tissue sample retrieval window formed near a proximal end thereof. 3. The device according to claim 2, further comprising: a first cutter gear fixedly connected to a proximal end of the cutter for imparting rotation to the cutter. 4. The device according to claim 3, further comprising: an internal gear rotatably supported within the housing, the internal gear including internal gear teeth for engaging the first cutter gear, wherein the first cutter gear is adapted to translate longitudinally relative to the internal gear. 5. The device according to claim 4, further comprising: a master drive gear rotatably disposed within the housing and operatively connected to the drive cable; a cutter drive shaft including a distal end and a proximal end operatively connected to the master drive gear; and a third cutter gear operatively connected to the distal end of the cutter drive shaft, wherein the third cutter gear is operatively engaged with the internal gear teeth of the internal gear, and wherein rotation of the drive cable imparts rotation to the internal gear. 6. The device according to claim 5, further comprising: a cutter advance gear operatively disposed within the housing, the cutter advance gear being in operative engagement with the master drive gear when the master drive gear is in engagement with the third cutter gear; a cutter advance shaft having a proximal end connected to the cutter advance gear and a distal end including a threaded section; and a lead nut operatively disposed on the threaded section of the cutter advance shaft, the lead nut including an extension arm extending distally therefrom and which is in contact with a proximal face of the first cutter gear, wherein as the cutter advance shaft rotates in a first direction, the lead screw translates distally, moving the first cutter gear in a distal direction relative to the internal gear. 7. The device according to claim 6, further comprising: a biasing element operatively engaged with a distal face of the first cutter gear for exerting a proximally oriented force on the first cutter gear. 8. The device according to claim 7, further comprising: a vacuum tube telescopically disposed within the needle, the vacuum tube having a proximal end attachable to a vacuum conduit for transmitting a vacuum from a vacuum source; and wherein the tissue receiving section of the needle includes at least one hole formed therein for transmitting the vacuum from the vacuum source. 9. The device according to claim 8, further comprising: a gear case disposed within the housing, the gear case includes a proximal end plate having a plurality of holes formed therein, wherein a central hole of the plurality of holes telescopically receives the needle therein, and the remaining holes of the plurality of holes rotationally support the master drive gear, the third cutter gear, and the cutter advance gear. 10. The device according to claim 1, further comprising: a support extending distally from the housing, the support including a hole formed therein for receiving the needle therethrough, wherein the hole formed in the support is axially aligned with a longitudinal axis of the needle. 11. The device according to claim 10, further comprising: a slide operatively connected to a distal end of the housing, the slide including a central hole axially aligned with the hole formed in the support; and a radiolucent tube operatively connected to the slide. 12. The device according to claim 1, further comprising: remote drive means connectable to the single drive cable, the remote drive means including a single rotational motor adapted to rotate in two directions. 13. A tissue removal device for selectively removing one or more tissue portions from a medical patient, the device comprising: a housing; a cutter rotatably and axially slidably mounted within the housing, the cutter includes an elongated hollow tube having a distal end defining a cutting edge; a needle slidably disposed within the cutter, the needle includes a piercing tip and defines a tissue receiving section adjacent the piercing tip, the needle being configured to deliver suction to the tissue receiving section to draw a portion of tissue therein, wherein the cutter selectively severs the portion of tissue while it is held in the tissue receiving section; a single drive cable operatively attached at one end to the housing, wherein the drive cable moves the cutter causing the cutter to sever the portion of tissue and selectively moves the needle relative to the housing; and a vacuum tube telescopically disposed within the needle, the vacuum tube having a proximal end attachable to a vacuum conduit for transmitting a vacuum from a vacuum source. 14. The device according to claim 13, further comprising: a slide operatively connected to a distal end of the housing, the slide including a central hole axially aligned with the hole formed in the support; and a radiolucent tube operatively connected to the slide. 15. A tissue removal device for selectively removing one or more tissue portions from a medical patient, the device comprising: a housing; a cutter rotatably and slidably supported on the housing and extending from a distal end thereof, the cutter including a hollow tube defining a distal cutting edge and a tissue sample retrieval window formed near a proximal end thereof; a needle telescopically disposed within the hollow tube of the cutter, the needle including a piercing tip formed at a distal end thereof and a tissue receiving section formed adjacent the piercing tip, the needle is configured to deliver suction to the tissue receiving section to draw a portion of tissue therein, wherein the cutter selectively severs the portion of tissue while it is held in the tissue receiving section, wherein the needle and cutter are movable relative to one another between a position wherein the tissue sample retrieval window of the cutter is in registration with the tissue receiving section of the needle, and at least one other position wherein the tissue sample retrieval window of the cutter is out of registration with the tissue receiving section of the needle; and a drive cable operatively attached at one end to the housing, wherein the drive cable moves the cutter causing the cutter to axially slide and rotate relative to the needle in order to sever the portion of tissue and to selectively axially move the needle relative to the housing to align the tissue receiving section of the needle with the tissue sample retrieval window of the cutter. 16. The device according to claim 15, further comprising: a first cutter gear fixedly connected to a proximal end of the cutter for imparting rotation to the cutter; and an internal gear rotatably supported within the housing, the internal gear including internal gear teeth for engaging the first cutter gear, wherein the first cutter gear is adapted to translate longitudinally relative to the internal gear. 17. The device according to claim 16, further comprising: a master drive gear rotatably disposed within the housing and operatively connected to the drive cable; a cutter drive shaft including a distal end and a proximal end operatively connected to the master drive gear; and a third cutter gear operatively connected to the distal end of the cutter drive shaft, wherein the third cutter gear is operatively engaged with the internal gear teeth of the internal gear, and wherein rotation of the drive cable imparts rotation to the internal gear. 18. The device according to claim 17, further comprising: a cutter advance gear operatively disposed within the housing, the cutter advance gear being in operative engagement with the master drive gear when the master drive gear is in engagement with the third cutter gear; a cutter advance shaft having a proximal end connected to the cutter advance gear and a distal end including a threaded section; and a lead nut operatively disposed on the threaded section of the cutter advance shaft, the lead nut including an extension arm extending distally therefrom and which is in contact with a proximal face of the first cutter gear, wherein as the cutter advance shaft rotates in a first direction, the lead screw translates distally, moving the first cutter gear in a distal direction relative to the internal gear. 19. The device according to claim 18, further comprising: a biasing element operatively engaged with a distal face of the first cutter gear for exerting a proximally oriented force on the first cutter gear. 20. The device according to claim 15, further comprising: a slide operatively connected to a distal end of the housing, the slide including a central hole axially aligned with the hole formed in the support; and a radiolucent tube operatively connected to the slide.
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이 특허에 인용된 특허 (245)
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