Apparatus for use in a surgical procedure

• US 9,427,254 B2
• Filed: 04/08/2013
• Issued: 08/30/2016
• Est. Priority Date: 03/25/2002
• Status: Expired due to Term

• Current Assignee: IZI Medical Products LLC (Halma PLC)
• Original Assignee: Kieran Murphy LLC.
• Inventors: Murphy, Kieran P.
• Primary Examiner(s): HINDENBURG, MAX F
• Application Number:
  US13/858,609
• Publication Number:
  US 20130226210A1
• Time in Patent Office: 1,240 Days
• Field of Search: 600562-567
• US Class Current: 1/1
• CPC Class Codes: A61B 10/0233 Pointed or sharp biopsy instruments
• CPC Class Codes: A61B 17/3403 Needle locating or guiding means guides for suture needles A61B17/0482; guiding or tracking by nuclear magnetic resonance G01R33/285
• CPC Class Codes: A61B 2090/374 NMR or MRI
• CPC Class Codes: A61B 2090/376 using X-rays, e.g. fluoroscopy
• CPC Class Codes: A61B 2090/3954 magnetic, e.g. NMR or MRI
• CPC Class Codes: A61B 46/10 specially adapted for instruments, e.g. microscopes
• CPC Class Codes: A61B 6/03 Computed tomography [CT] echo-tomography A61B8/14
• CPC Class Codes: A61B 6/4423 related to hygiene or sterilisation
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers
• CPC Class Codes: A61L 31/18 Materials at least partially X-ray or laser opaque
• CPC Class Codes: Y10T 428/24273 including aperture

Abstract

An embodiment of the present invention provides a kit of parts for use in a surgical procedure performed under image guidance, and particularly under real time image guidance. The kit includes a sterilized drape for use with the chosen imaging machine and which can be used to provide a sterile operating environment when the procedure is performed under the imaging beam. The kit also includes a needle holder that can keep the surgeon'"'"'s hand away from the imaging beam. The needle holder is operable to hold a needle that is made from a material suitable for piercing tissue, but also substantially preserves the appearance of the needle when it is viewed under the imaging beam.

Claims

1. A biopsy needle for use in biopsies guided by a computed tomography (CT) imaging apparatus, comprising:

a biopsy needle stylet having a solid shaft and being made of a first material selected from carbon fibre or plastic such that an appearance of the solid shaft generated by the CT imaging apparatus presents reduced imaging artifacts;

a biopsy needle cannula having a hollow shaft configured to receive the solid shaft of the stylet, a proximal end and a distal end remote from the proximal end, the cannula being made of a second material selected from the group consisting of stainless steel, aluminum, nitinol, and Inconel, and the distal end being configured to pierce tissues of a patient;

wherein the solid shaft of the stylet is positioned wholly inside the cannula and has a proximal end and an opposing distal end, the proximal end of the stylet being configured to fix the stylet to the cannula and the opposing distal end of the stylet being contiguous with the distal end of the cannula, and wherein the distal end of the cannula is effective to pierce tissues of a patient.

2. The needle of claim 1 wherein the second material is not stainless steel and has a radiopacity lower than the radiopacity of stainless steel, such that an appearance of the solid shaft generated by the CT imaging apparatus presents reduced imaging artifacts.

3. The needle of claim 1 wherein the first material has a Hounsfield value of less than 1900.

4. The needle of claim 1 wherein the first material is plastic.

5. The needle of claim 4 wherein the first material is selected from the group consisting of nylon, polycarbonate, acrylic, and polyether ether ketone (PEEK).

6. The needle of claim 1 wherein the second material is stainless steel.

7. The needle of claim 1 wherein the second material is aluminum.

8. The needle of claim 1 wherein the solid shaft is made entirely of the first material.

9. The needle of claim 1 wherein the proximal end of the solid shaft and the proximal end of the hollow shaft have complementary locking mechanisms.

10. The needle of claim 9 wherein the complementary locking mechanisms are complementary threads.

11. The needle of claim 9 wherein the complementary locking mechanisms are complementary Luer lock fittings.

12. The needle of claim 5, wherein the first material is nylon.