Biopsy device having a vacuum pump
First Claim
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1. A biopsy device, comprising:
- a housing;
a drive contained in said housing;
a biopsy needle assembly including a biopsy needle carrier, a biopsy needle and a cutting sheath, said biopsy needle carrier coupled to both said biopsy needle and said cutting sheath, said biopsy needle carrier positioned in said housing; and
a vacuum pump positioned in said housing, said vacuum pump having an elongate cylinder and a piston movable inside said elongate cylinder, said piston being drivably coupled to said drive, said elongate cylinder coupled to said biopsy needle to generate a vacuum in said biopsy needle when said piston is driven by said drive,said elongate cylinder and said biopsy needle being arranged in parallel in said housing,wherein said elongate cylinder is coupled to said biopsy needle by a U-shaped length of flexible tube to communicate a vacuum from said elongate cylinder to said biopsy needle.
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Abstract
A biopsy device includes a housing. A drive is enclosed in the housing. A biopsy needle assembly has a biopsy needle carrier that carries a biopsy needle. The biopsy needle carrier is positioned in the housing. A vacuum pump is positioned in the housing. The vacuum pump has an elongate cylinder and a piston sealed and movable inside the elongate cylinder. The piston is drivably coupled to the drive. The elongate cylinder is connected to the biopsy needle to generate a vacuum in the biopsy needle when the piston is driven by the drive. The elongate cylinder and the biopsy needle are arranged in parallel by the housing.
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Citations
16 Claims
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1. A biopsy device, comprising:
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a housing; a drive contained in said housing; a biopsy needle assembly including a biopsy needle carrier, a biopsy needle and a cutting sheath, said biopsy needle carrier coupled to both said biopsy needle and said cutting sheath, said biopsy needle carrier positioned in said housing; and a vacuum pump positioned in said housing, said vacuum pump having an elongate cylinder and a piston movable inside said elongate cylinder, said piston being drivably coupled to said drive, said elongate cylinder coupled to said biopsy needle to generate a vacuum in said biopsy needle when said piston is driven by said drive, said elongate cylinder and said biopsy needle being arranged in parallel in said housing, wherein said elongate cylinder is coupled to said biopsy needle by a U-shaped length of flexible tube to communicate a vacuum from said elongate cylinder to said biopsy needle. - View Dependent Claims (2, 3, 4, 5)
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6. A biopsy device, comprising:
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a housing; a drive contained in said housing; a biopsy needle assembly including an elongate biopsy needle carrier, a biopsy needle and a cutting sheath, said elongate biopsy needle carrier coupled to both said biopsy needle and said cutting sheath, said elongate biopsy needle carrier positioned in said housing; a vacuum pump including an elongate cylinder and having a piston movable inside said elongate cylinder, said piston being drivably coupled to said drive, said elongate cylinder being arranged in said housing in parallel with said elongate biopsy needle carrier; a flexible tube coupled between said biopsy needle and said elongate cylinder; and a shooting device coupled to said biopsy needle carrier, said shooting device configured to move said biopsy needle and said cutting sheath relative to said housing and said elongate cylinder, said flexible tube being sufficiently flexible to accommodate movement of said biopsy needle by said shooting device, wherein a distal end of said biopsy needle assembly is distal to a distal end of said elongate cylinder, and a proximal end of said biopsy needle assembly is proximal to a proximal end of said elongate cylinder. - View Dependent Claims (7, 8)
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9. A biopsy device, comprising:
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a housing; a biopsy needle assembly including a biopsy needle and a cutting sheath, said biopsy needle and said cutting sheath configured to harvest a biopsy sample, said biopsy needle assembly configured for mounting to said housing; a drive mechanism having a drive gear; and a vacuum pump positioned in said housing, said vacuum pump including; an elongate cylinder, said elongate cylinder coupled to said biopsy needle assembly; a piston movable inside said elongate cylinder; a rack coupled to said piston; and a toothed crown nut configured to mesh with said rack to drive said piston via said rack when said toothed crown nut rotates, and said toothed crown nut configured to mesh with said drive gear, said drive mechanism configured to rotate said drive gear to cause a translation of said piston in said elongate cylinder to generate a negative pressure. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification