Rasp tool including detachable handle member
First Claim
1. A rasp tool for use by a surgeon to contour bone or the like, comprising:
- cutting means for contouring the bone, said cutting means including an axially extending locking post;
handle means, selectively connectable to said cutting means and operable by the surgeon, for imparting movement to said cutting means, said handle means comprising an elongated handle member connectable at one end thereof to said cutting means and having a head portion at the other end thereof, said handle means including a post-receiving bore adapted to axially receive said locking post therein;
releasable locking means associated with said handle means for selectively interconnecting said handle means and said cutting means against axial separation when said locking post is received within said bore, said locking means including key means for engaging said locking post within said bore in response to introduction of said locking post into said bore, said locking post includes a generally V-shaped transverse notch and said key means includes an elongate locking key having one end that extends into said notch at an acute angle relative to the axially extending locking post to operatively engage said locking post, and said elongate locking key intersecting said post receiving bore at an acute angle relative thereto; and
disengaging means, associated with said handle means and manually actuable by the surgeon, said disengaging means including a manually actuable trigger located toward said other end of said handle member spaced from said cutter means for disengaging said key means from said locking post, thereby permitting removal of said locking post from said bore.
3 Assignments
0 Petitions
Accused Products
Abstract
A rasp tool including a handle member, a cutter member, and a releasable locking mechanism for selectively coupling the handle and cutter members. The locking mechanism includes a locking post on the cutter member and a corresponding post-receiving bore in the handle member. A spring-biased locking key is disposed within a guide bore that intersects the post-receiving bore such that the locking key extends partially into the post-receiving bore. As the locking post is axially introduced into the post-receiving bore, the locking post contacts the locking key and causes it to retract until the locking post is fully received within the bore, at which point the spring-biased locking key engages a transverse notch in the locking post, thereby preventing axial removal of the post from the bore. The locking key is disengaged from the locking post by a manually-actuable trigger coupled to the locking key.
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Citations
19 Claims
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1. A rasp tool for use by a surgeon to contour bone or the like, comprising:
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cutting means for contouring the bone, said cutting means including an axially extending locking post; handle means, selectively connectable to said cutting means and operable by the surgeon, for imparting movement to said cutting means, said handle means comprising an elongated handle member connectable at one end thereof to said cutting means and having a head portion at the other end thereof, said handle means including a post-receiving bore adapted to axially receive said locking post therein; releasable locking means associated with said handle means for selectively interconnecting said handle means and said cutting means against axial separation when said locking post is received within said bore, said locking means including key means for engaging said locking post within said bore in response to introduction of said locking post into said bore, said locking post includes a generally V-shaped transverse notch and said key means includes an elongate locking key having one end that extends into said notch at an acute angle relative to the axially extending locking post to operatively engage said locking post, and said elongate locking key intersecting said post receiving bore at an acute angle relative thereto; and disengaging means, associated with said handle means and manually actuable by the surgeon, said disengaging means including a manually actuable trigger located toward said other end of said handle member spaced from said cutter means for disengaging said key means from said locking post, thereby permitting removal of said locking post from said bore. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A rasp tool for use by a surgeon to contour bone or the like, comprising:
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a cutter member including an abutment surface and a locking post extending axially from said abutment surface; an elongate handle member including an abutment surface at one end and a head portion at the other end, said one end including an axial post-receiving bore having an access opening on said abutment surface of said handle member, said locking post being receivable within said post-receiving bore in response to relative axial movement of said cutter member toward said handle member to a fully engaged position at which said abutment surface of said cutter member is adjacent said abutment surface of said handle member; releasable locking means associated with said handle member for selectively locking said locking post within said post-receiving bore to prevent axial removal of said locking post from said bore, said locking means including a locking key slidably received within a guide bore formed in said handle member and intersecting said post-receiving bore at an acute angle relative thereto, said locking key being slidable within said guide bore between an extended position at which said locking key extends partially into said post-receiving bore and operatively engages said locking post, and retracted position at which said locking key is retracted from said post-receiving bore and is disengaged from said locking post, said locking key being spring-biased toward said extending position thereof; and disengaging means, manually actuable by the surgeon and associated with said handle member, said disengaging means including a manually actuable trigger located toward said other end of said handle member, for disengaging said locking key from said locking post, thereby permitting removal of said locking post from said post-receiving bore. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A rasp tool for use by a surgeon to contour bone or the like, comprising:
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a cutting means for contouring the bone, said cutting means including an axially extending locking post; handle means, selectively connectable to said cutting means and operable by the surgeon, for imparting movement to said cutting means, said handle means including a post-receiving bore having an elongate axis, and wherein the bore is adapted to axially receive said locking post therein; releasable locking means associated with said handle means for selectively interconnecting said handle means and said cutting means against axial separation when said locking post is received within said bore, said locking means including key means for engaging said locking post within said bore in response to introduction of said locking post into said bore, said locking post includes a generally V-shaped transverse notch and said key means includes an elongate locking key having one end that extends into said notch at an acute angle relative to the axially extending locking post to operatively engage said locking post, and said elongate locking key having an elongate axis intersecting the axis of the post receiving bore at an acute angle relative thereto; and disengaging means, associated with said handle means and manually actuable by the surgeon, for disengaging said key means from said locking post, thereby permitting removal of said locking post from said bore.
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Specification